Electrical resistance Essays & Research Papers

Best Electrical resistance Essays

  • Electrical Resistance - 644 Words
    JMJ MARIST BROTHERS NOTRE DAME OF DADIANGAS UNIVERSITY MARIST AVENUE, GENERAL SANTOS CITY MULTITESTER Instrumentation and Control CpE 511 NAME: KURT RUSSEL C. CHUA September 01, 2012 CYNTHIA C. GONZAGA Date of Submission INSTRUCTOR: ENGR. JAY S. VILLAN, MEP-EE Introduction A multitester or multimeter is a device which can be used to gather data about electrical circuits. A basic multitester can measure resistance, voltage, and continuity; while more...
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  • Electrical Resistance and Wire - 7106 Words
    Introduction The purpose of this investigation is to expose the factors responsible for affecting the resistance of a wire in an electrical circuit. Many factors will have to be investigated prior to experimentation. A prior knowledge of electrical circuits and the factors of resistance will be required. The conclusive objective will be that research on the subject matter is proven by experimentation. Resistance The standard opinion of resistance when electricity is concerned is the...
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    7,106 Words | 33 Pages
  • Electrical Resistance and Power Factor
    BASIC ELECTRICITY PHASE – I TOTAL MARKS:100 TIME: 90 MINUTES CODE :260203 1. The smallest particle into which any compound can be divided and still retain its identity is called a. Atom b. Molecule c. Element d. Matter 2. An element whose outermost shell contain four electrons is called as a. Insulator b. Semi conductor c. conductor d. none of the above 3. Conventional current flows when proton moves...
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  • Electrical Resistance and Assignment Print View
    MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrint?assig... [ Assignment View ] Eðlisfræði 2, vor 2007 25. Current, Resistance, and Electromagnetic Force Assignment is due at 2:00am on Wednesday, February 14, 2007 Credit for problems submitted late will decrease to 0% after the deadline has passed. The wrong answer penalty is 2% per part. Multiple choice questions are penalized as described in the online help. The unopened hint bonus is 2%...
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  • All Electrical resistance Essays

  • Electrical Technology - 9993 Words
    Table of Contents Objective – Chapter 1 1 1.0 INTRODUCTION TO ELECTRICAL CIRCUITS 2 Basic Quantities and Units in Electrical 2 Quantities 2 Units 3 Factors Affecting Resistance 4 Length of the Conductor: 4 Area of Cross-Section of the Conductor: 4 Electrical Resistivity of Substances 5 Effect of Temperature 5 Components of Electrical Circuits 6 Components of an Electric Circuit 7 Measuring Current, Voltage and Resistance 8 Measuring voltage 8 Measuring current 9...
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    9,993 Words | 40 Pages
  • Electrical Formula - 747 Words
    CHAPTER 1 ELECTRICAL FORMULAS OHM’S LAW/POWER FORMULAS R x I2 E x I P R P E E2 RxI R P I P x R E I P I E R E R P I2 E2 P P = Power = Watts R = Resistance = Ohms I = Current = Amperes E = Force = Volts 1-1 OHM’S LAW DIAGRAM AND FORMULAS E I E = I x R I = E ÷ R R = E ÷ I R Voltage = Current x Resistance Current = Voltage ÷ Resistance Resistance = Voltage ÷ Current POWER DIAGRAM AND FORMULAS P E I = P ÷ E E = P ÷ I P = I x E I Current = Power ÷...
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  • Resistance of a Wire - 4052 Words
    Introduction The resistance of a wire depends on certain factors. Some of these variables are listed below: • Length of wire • Diameter or thickness of wire • Temperature at which wire is kept • The material of which wire is made out of. • The potential difference or voltage. • Humidity • Cross sectional area. • Voltage across circuit All these factors will have to be kept constant except the diameter of the wire whilst doing the experiment to ensure that the investigation is...
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  • Batteries and Resistance - 1200 Words
    Batteries, Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”, watch what happens, adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery, label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery. The blue dots indicating the electrons move because there is a voltage across the battery in which the electrons flow away from the positive...
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  • Ohmmeter and Resistance - 1486 Words
    MEASUREMENTS AND ELECTRONIC INSTRUMENTS (EE21004) TUTORIAL-I SECTION 1: QUALITY OF MEASUREMENTS Q1. (a) A meter ‘I’ has ± 5% accuracy on true value while another ‘II’ has ±5% accuracy on scale range. Both the meters have the same scale range. Calculate the ratio of accuracy of the two meters for a deflection of 10% of full scale range in each meter. [1:10] (b) A 0-100V voltmeter has 200 scale divisions which can be read to half a division. Determine resolution of meter in volt. [0.25 V]...
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  • Electrical Cable - 2169 Words
    Electrical Cable Cross section is just a two-dimensional view of a slice through an object. An often asked question: How can you convert the diameter of a round wire d to the circle cross section surface or the cross-section area A (slice plane) to the cable diameter d? Resistance varies inversely with the cross-sectional area of a wire. | ------------------------------------------------- Top of Form | Wire diameter d | unit | | | Cross-sectional area A | unit2 | |...
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  • Resistance Coursework - 1205 Words
    Resistance coursework Aim: My aim is to find out which factors affect the resistance of wire and how they affect them. Ohm's Law: Ohm's law is also relevant to know of Ohm's Law, which states that the current through a metallic conductor (e.g. wire) at a constant temperature is proportional to the potential difference (voltage). Therefore V ¸ I is constant. This means that the resistance of a metallic conductor is constant providing that the temperature also remains constant....
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  • Measuring Resistance - 649 Words
    Measuring Resistance Experiment Evaluation M U S (12037486) Table of Contents Title Page 1 Introduction 3 Research Questions 4 Questions 4 Answers 4 Experiment 6 Introduction This experiment is carried out to show how the Research Questions Questions 1) Provide the units used to measure the following quantities, electric current, inductance, frequency, power and energy (work). 2) What is the difference between AC and DC voltages? Give examples. 3)...
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  • Electricity and Resistance - 1774 Words
    CHAPTER - 12 ELECTRICITY HOTS Questions for Practice 1. Name a substance whose resistance almost remains unchanged by increase of temperature. 2. Name two special characteristics of heater coil. 3. A wire of resistance 4 ohms is bent to form a circle. What is the resistance between two diametrically opposite ends? 4. How does the resistance of a conductor change if its temperature is increased? 5. A current of 4A flows in a wire of resistance 60 ohms. Calculate electrical energy consumed in 2...
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  • Resistance Box - 641 Words
    | Measurement of Electrical Resistance and Ohm’s Law | Physics Lab 204.001 | | | | Yewande Adeniyi | 9/22/2011 | | PROCEDURE 1. Connect the ammeter A, the voltmeter V, and the power supply PS to the Resistance Box. The basic circuit supply is series with a resistor. To measure the current in the resistor, the ammeter is placed in series. To measure the voltage across the resistor, the voltmeter is placed in parallel. 2. Vary the current through resistor R1 in...
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  • Resistance in a Conductor - 513 Words
    Resistance in a Conductor: The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor. Electrical resistance shares some conceptual parallels with the mechanical notion of friction. The SI unit of electrical resistance is the ohm (Ω).An object of uniform cross section has a resistance proportional to its resistivity and length and inversely proportional to its cross-sectional area. All materials show some resistance, except...
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  • Resistance of a Wire - 1879 Words
    The resistance of a wire Planning:- Introduction: To investigate the resistance of a wire at different lengths to see whether or not a longer wire has a larger resistance than a shorter wire. Apparatus: Wire Voltmeter Ammeter Battery 2 crocodile clips Metre rule Variable resistor Diagram: Variables: Length Thickness Resistance Material The material and diameter of the wire needs to be kept constant to keep the test fair as we are investigating resistance. The...
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  • Resistance of Wire - 1788 Words
    METHOD  Set p the equipment as shown on the diagram.  One meter length of wire is fixed to a one meter ruler.  The first crocodile clip is clipped to the wire at the 0cm position on the one meter ruler.  The second crocodile clip is clipped to the 10cm position.  The power supply is turned on. The voltage and current are then read of the ammeter and voltmeter, and recorded.  The power supply is then turned off and the second crocodile clip...
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  • Resistance of a Wire Coursework - 1528 Words
    The problem with using resistance as a measurement is that it depends not only on the material out of which the wire is made, but also the geometry of the wire. If we were to increase the length of wire, for example, the measured resistance would increase. Also, if we were to decrease the diameter of the wire, the measured resistance would increase. We want to define a property that describes a material's ability to transmit electrical current that is independent of the geometrical factors....
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  • Electrical Circuits: Assignment - 188 Words
     Activity 1.2.3 Electrical Circuits – Physical – Part 3 1 Explain the difference between a series and a parallel circuit. 1. Explain the difference between the voltage output at the battery and the voltage across each component in the series circuit. Explain the relationship between the current output at the power supply and the current through each component in the series circuit. Explain how your data support the relationships observed. 2. Explain why the current is the same between...
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  • Electrical Engineering Lab Report
    Resistors & Ohm’s Law Abstract: In this lab, students were introduced to the field of electrical engineering. The objectives of the lab were to determine the resistance of a resistor using various methods and to also verify Ohm’s Law. In the lab, the students were instructed to calculate the resistance by using color codes, measuring the resistance using a Digital Multi Meter, calculate the average resistance from 10 voltage and current measurements, and find the graphical...
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  • Electrical Circuits Portfolio - 871 Words
    Series and Parallel Circuits Name: Angelica Castro Directions: 1. Go to the following website: http://phet.colorado.edu/en/simulation/circuit-construction-kit-ac-virtual-lab 2. Click “Run now.” You now have the raw material to create a circuit. Take a moment to look over the site and find all the different materials. To build a circuit you will need several wires, a light bulb, a voltage source, a voltmeter, and a non – contact ammeter. Play with it to see how to grab and...
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  • Resistance and Electric Circuits - 714 Words
    | Resistance and Electric Circuits | Lab 5 | | | The goal of the “Resistance and Electric Circuit” Lab was to determine the resistivity of a conducting wire given two known resistors. The main property of resistivity is that it represents how easily electrons can flow through a material. A Galvanometer is used to measure the current of the circuit and the Wheatstone Bridge is used to measure the resistances and determine the unknown resistance. This experiment also relates Ohm’s...
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  • Factors Affecting the Resistance of Wire
    Aim: To investigate the factors that affect the resistance in a conductor. The main factors that affect the resistance in a conductor are: · Length · Temperature · Cross sectional area · Material · Magnetism The factor that we are going to change is the cross sectional area. Hypothesis: I think that the higher the cross sectional area, the lower the resistance in the conductor will be. This is because the Resistance in a metal conductor happens because as the electrons...
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  • factors affect the resistance of a conductor
    Physics assignment Aim To determine which factors affect the resistance of a conductor, and the mathematical relationship that exists between these variables. Hypothesis Copper wires would be a better conductor than nichrome wires because it would yield less resistance when they have same cross-sectional area, length and temperature. Resistance would be increased when length wires increased. Resistance would be increased when cross-sectional area of wires decreased. Resistivity of wires is a...
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    2,938 Words | 19 Pages
  • The Resistance of a Piece of Wire - 1185 Words
    Data Analysis The investigation I did was to find the resistance of a piece if wire. The piece of wire is my dependent variable throughout the investigation. I changed the length of the wire in order to measure the resistance of each length. Plan In this investigation, a simple circuit will be set up to read the voltage and current when the length of the wire changes. The length will range from 10cm-80cm with intervals of 10cm. The length of the wire will be changed by moving the crocodile...
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  • Electrical Engineering Lab Session
    ELECTRICAL ENGINEERING LABORATORY SESSION 1 Title: RESISTOR NETWORKS Name:Richard Lancaster Date: 11th Sep 2010.Student Name: Richard Lancaster. Id No: (09099972) Course: B.Sc. Engineering Science Subject: Electrical Engineering Lecturer: Dr Martin Hayes Objectives: 1. Introductory familiarisation with D.C measurements. 2. Introduction to the use of pSpice as a tool for emulating circuits. pSpice v9.1 can be downloaded from Moodle or via...
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  • Electric Current and High Resistance
    Answers to Questions 1. Is it desirable for an ammeter to have a high resistance or low resistance? Why? ➢ Yes, it is desirable for an ammeter to have a high resistance or low resistance because the lower the resistance, the better the ammeter as it is connected in series and so its resistance will affect the current flow and thereby affect any calculations to be obtained. 2. An ammeter of resistance Ra is connected through a rheostat to a cell of negligible internal...
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    297 Words | 2 Pages
  • Measurement of Resistance and Ohm’s Law
    LAB 01 Measurement of Resistance and Ohm’s Law Section : 04 Instructor’s Name : BERNA DÜNDAR Experiment Date : 26/02/2014 Submission Date : 05/03/2014 Measurement of Resistance and Ohm’s Law Department of Physics,Işık University Meşrutiyet Köyü,Üniversite Sokağı,No:2 34980 Şile,İstanbul Abstract In this experiment we used two multimeters, a set of resistors, a bundle of connecting wires and a DC power supply. By...
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  • Electric Current and Resistance - 722 Words
    Batteries, Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”, watch what happens, adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery, label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery. The electrons move because of the battery voltage. The current flows in the opposing direction of the electrons and the electrons flow towards the...
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    722 Words | 4 Pages
  • Resistor and Total Resistance - 274 Words
    ECT 122 Week 3 iLab #1 Parts: Breadboard DC Power Supply Hand Held DMM Test leads Wire 1.0kΩ resistor 2.2kΩ resistor 3.3kΩ resistor 1. Identify the type of the following circuits as either serial or parallel. 2. List four characteristics of a series circuit. * Resistance: The total resistance is equal to the sum of the individual resistances. * Current: The current at any point in the circuit equals the current at all other points. The value of current depends on the...
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    274 Words | 2 Pages
  • Resistance in a Wire Coursework - 1526 Words
    Resistance in a Wire Coursework In this investigation we are trying to look for resistance in a piece of wire, and how the length of a wire can increase or decrease the resistance. The things that affect the resistance in a wire are: • the length of the wire • a certain amount of wire • cross sectional area of the wire (thickness) • temperature • material What things can affect the resistance in a wire? The temperature can affect the resistance in a wire, because the more...
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  • Factors affecting the resistance of a wire
    Factors affecting the resistance of a wire Introduction: Resistance is a force, which opposes the flow of an electric current around a circuit. Resistance is measured in Ohms. George Ohm discovered that a circuit sometimes resists the flow of electricity. He called this 'RESISTANCE.' He even came up with a rule for working out the resistance of a circuit, which was: R= V ÷ I V- Volts I- Current R- Resistance Ohms law says the more resistance means more energy is needed for the current to...
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    1,210 Words | 7 Pages
  • Introduction to Electrical Engineering: Lab 1
    Introduction to Electrical Engineering: Lab 1 I. Purpose This lab was performed in order to become familiar with measuring voltage, current, and resistance using a voltmeter, ammeter, and ohmmeter. In addition, the property of electrical resistance will be studied with three different types of sensors. Lastly, the resistance associated with a small audio speaker will be explored. II. Introduction Three basic electrical concepts were examined in this lab: voltage, current, and...
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  • Electrical Engineering FundamentalsBasic Concepts and Ohms
    Electrical Engineering Fundamentals Basic Concepts and Ohm’s Law EEF 1 ECS1300L Dr SMR Jones Resistance • In 1827 Georg Simon Ohm published the results of experiments using the recently invented electrochemical cell, invented by Italian Count Alessandro Volta. • Ohm found that the electrical current (I) flowing through a sample of material was directly proportional to the voltage (V) applied across the sample, i.e. V R I • This is known as “Ohm’s Law”. • The constant of proportionality, R,...
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  • Physics Gcse Coursework: Resistance of Wire
    Physics GCSE coursework: Resistance of wire Aim: To investigate if the length of wire affects its resistance. Prediction (Hypothesis): I predict that the longer the wire the higher the resistance, and the shorter the wire the lower the resistance. Knowledge: Resistance is that property of electric components that turn electric energy into heat in opposing the passing of an electric current.It can be beneficial, as in electric heaters, or a pest, as in light bulbs, where the...
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    1,354 Words | 6 Pages
  • Resistance: Electric Current and Potential Difference
    What happens to resistance of a conductor when its area of cross-section is increased? Ans. Resistance decreases Question 2 The charge possessed by an electron is 1.6x10-19 coulombs. Find the number of electrons that will flow per second to constitute a current of 1 ampere. Ans. Question 3 Name the instrument used to measure electric current in a circuit. Ans. Ammeter Question 4 In the following table the values of current I flowing in a given resistor for the...
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  • To investigate the factors of affecting the resistance of a wire.
    Physics Coursework- Ohm's Law Aim: To investigate the factors of affecting the resistance of a wire. In this experiment I will be using a metal nichrome wire to show the resistance when the length and width is changed. Variables Variables that I am going to keep the same. Variables that I am going to change. Width- 0.36mm2 Material- Nichrome wire Voltage- 2V Temperature- Room Temperature Length- 10cm, 20 cm, 30cm, 40cm, 50cm Material- Nichrome Length- 50cm Voltage- 2V Temperature-...
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    2,046 Words | 11 Pages
  • Electricity: Electric Current and New Resistance
    COMMON MISTAKES AND HOW TO AVOID THEM Phy X: ELECTRICITY 1. Topic Direction of flow of current. Common slips made Confusion between direction of flow of current and direction of movement of electrons Confusion in use of symbols- Is ampere written as A or amp. V=W/Q is often remembered wrongly. In questions where you have to check the resistance from the graph see what is plotted along the x and y axis. Reason why alloys are used to make elements of electric irons and heaters is not...
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    789 Words | 3 Pages
  • resistance color code lab report
    Experiment number : 1! ! ! ! ! Title : Resistance Color Code ! ! ! Performed by : El Batina Bokhoum Engineering course : ENG-102 Partners : Betsy Batista Lab Day/Hour : Tuesday 6-8 pm! Jermaine Lockley ! Lab Instructor : Dr. Gontar ! Date Performed : 09/09/14! Date Due: 09/16/14! ! Purpose : The purpose of this lab is to be able to measure the resistance of color code ! .The experiment will help us to interpret and record the ohmic value of a resistor when...
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  • How Does the Length of a Wire Affect Its Resistance?
    How does the length of a wire affect its resistance? Introduction: This first report in Physics will show the investigation of how the length of a wire affects its resistance. For starters I will go through the main definitions, to get a better knowledge of what is going to happen. However I will plan it out first to show each step of how I started, and then go into detail about the results and what the investigation on a whole has showed me. I shall then conclude my findings and present...
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    4,171 Words | 13 Pages
  • An experiment to investigate the factors which affect the resistance in a wire.
    An experiment to investigate the factors which affect Resistance in a wire What is resistance? A potential difference (V) applied across a wire of length (l), there is in the conductor, an electric field (E). In this electric field the free electrons are not however under continuous acceleration (Ee/m). This is because they repeatedly collide with the moderately massive vibrating atoms losing their kinetic energy. The vibrating atoms having gained this kinetic energy now vibrate more. The...
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    1,674 Words | 6 Pages
  • Science Discussion Potential Difference in Electrical Circuit
    Potential Difference in Electrical Circuit Discussion: We conducted this experiment to test out the relationship of potential differences and currents in series and parallel circuits. We were to indicate the special properties that the potential differences and currents had with both types of circuits. In short, we were to test out Kirchhoff's laws. Before starting the lab, we had to pick three different resistors and we were to calculate the values for the total resistances,...
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  • How does the length of wire effect resistance
    Plan What is a current? Current is the flow of electrons which come from a metal these are called ‘free electrons.’ Elec-trons flow from the negative terminal to the positive terminal. Electrons carry energy around the circuit, they attain their energy from the battery. Current is measured in Amps. What is resistance? Resistance is the opposition to the flow of electric current through a material. Resistance is measured in Ohms. Resistance is calculated by dividing the voltage by the...
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  • Hows does changing the length of wire affect resistance?
    OBJECTIVE For this piece of coursework I have been asked to investigate into the resistance of wires when the length is changed. INTRODUCTION The objective for my coursework (as already stated above) is to investigate how changing the length of wire can affect the resistance. There are factors which can affect how accurate our expriment is come on four levels. As in any scientific experiment, there are always variables ( "likely to change or vary subject to variation; changeable." ) which...
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    1,394 Words | 6 Pages
  • How Does the Diameter of a While Affect the Resistance in a Circuit
    How Does The Diameter Of Wire Affect The Resistance In A Circuit? Introduction: Some metals such as copper, silver and gold are very good conductors of electricity. This is because they all have only one electron on the outer shell. This means that they need only a tiny amount of energy in order to allow the electron to move. Non-metals, however, do not have free electrons, so even non-metals that only have one electron on their outer shell can still hold onto them tightly. Aim Of The...
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  • Analysis Of Two And Four Lead Resistance Measurements
    Analysis of two and four-lead resistance measurements Johnny Greavu University of Minnesota-Twin Cities September 29, 2014 Introduction We measured the resistance per foot of a wire using setups of both two and four test leads in tandem with a digital voltmeter (DVM) and compared their accuracy. While resistance can be determined by measuring voltage and current separately, it can also be measured more simply and directly using the resistance measuring feature available to some digital...
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    526 Words | 2 Pages
  • Article Review: Forces for and Resistance to Organizational Change by Fred C. Lunenburg
    CHANGE MANAGEMENT ASSIGNMENT Summary of the Article: “Forces for and Resistance to Organizational Change” The article “Forces for and Resistance to Organizational Change” was written by Fred C. Lunenburg from Sam Houston State University and was published in the National Forum of Educational Administration and Supervision Journal’s Volume 27, Number 4, 2010. In this article Mr. Houston discussed the factors which force and resist the change and how to handle them in order to achieve the desired...
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  • Exp8Physics - 698 Words
    Application 1. What are the laws of series resistors? Of parallel resistors? Are these laws verified in your experiment? Ohm’s Law - Ohm's law states that the voltage (V) across a resistor is proportional to the current (I), where the constant of proportionality is the resistance (R). Series and parallel resistors - The total resistance of resistors connected in series is the sum of their individual resistance values. The total resistance of resistors connected in parallel is the...
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    698 Words | 3 Pages
  • introduction to laboratory oppratus and component
    Experiment1: Introduction to laboratory equipment and basic components. 1 OBJECTIVES. This experiment will provide exposure to the various test equipment to be used in subsequent experiments. A primary purpose of this lab course is for you to master the use of electronic test equipment. The devices we will be using include DC power supplies, breadboards, digital multi-meters ”DMM”, oscilloscope and a function generator, as well as some resistors, capacitors and inductors, so we can...
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  • Lupain Sa Taglamig - 628 Words
    Ohm's Law Series-Parallel Circuits Calculation To end up the discussion of Series-Parallel Circuits, I would like to post this last one remaining topic which is about Ohm's Law of Series-Parallel Circuits for currents and voltages. I did not even mentioned in my previous topics on how to deal with its currents and voltages regarding this type of circuit connection. Ohms Law in Series-Parallel Circuits Ohm's Law in Series-Parallel Circuits - Current The total current of the...
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  • Thevenin's Theorem La Report,
    EXPERIMENT NO. 10 Thevenin’s Theorem Objectives: 1. To verify the Thevenin’s theorem through an experiment. 2. To find the Thevenin’s resistance RTH by various methods and compare values. Equipment: Resistors, DMM, breadboard, DC power supply, and connecting wires. Theory: Thevenin theorem states that any linear two-terminal circuit can be replaced by an equivalent circuit consisting of a voltage source VTH in series with a resistance RTH where * VTH is the open-circuit voltage...
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    669 Words | 4 Pages
  • Parallel and Series Combination Circuits
    Page 1 of 5 Name: ______________________________ ECET 231 - Circuit Analysis I Lab 6 Series-Parallel DC Circuits Objective: Students successfully completing this lab will accomplish the following objectives: 1. Gain experience analyzing and verifying, by measurements, the characteristics of series-parallel resistive circuits. 2. Increase understanding of the relationship of voltage, current and resistance in a series-parallel circuit 3. Learn to compute currents through the use of...
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  • Earthing Fundamental - 12697 Words
    Earthing Techniques 1. SOIL RESISTIVITY TESTING.................................................................................................................................... 1.1 INTRODUCTION................................................................................................................................................................. 1.2 THEORY OF SOIL...
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  • Thevenin Theorem - 669 Words
    Thevenin Theorem It provides a mathematical technique for replacing for a given network, as viewed from two output terminals by a single voltage source with a series resistance. It makes the solution of complicated networks (particularly, electronic networks) quite quick and easy. The Thevenin’s theorem, as applied to d.c. circuits, may be stated as under: The current flowing through a load resistance RL connected across any two terminals A and B of a linear, active bilateral network is...
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  • ECT122 Wk2 Assignment - 462 Words
    Chapter 3 Ohm’s Law and Power Practice Problems 13. Calculate the minimum acceptable power rating for the resistor in Figure 3.25a. V= 6V, R=120Ω 300 mW 14. Calculate the minimum acceptable power rating for the resistor in Figure 3.25b. V= 8V, R=16Ω 4W 21. Complete the following chart. Current Voltage Resistance Power a.10mA 200 mV 20 Ω 4W b. 500 µA...
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  • Home Work - 760 Words
    Delhi Public School Meerut HOLIDAYS HOMEWORK 2013-14 Class : X Dear Students, Summer Vacations are back & so is all the fun and frolic. This is definitely a welcome break… Break from fixed schedules, rules and regulations of school. But remember freedom brings more responsibility. Keeping this in mind, We have planned most of the activities for you to keep you engaged positively and your energies well directed. Though, we, your teachers, will not be physically present to keep a...
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    760 Words | 4 Pages
  • Metre Bridge - 460 Words
    Ex.No Date Aim: To find resistance of a given wire using metre bridge and hence determine the specific resistance of its material. Apparatus: A meter bridge ,a Leclanche cell , a galvanometer ,a resistance box, a jockey, a resistance wire or resistance coil, a metre scale, a set square and connecting wires Procedure: 1.Draw the circuit diagram as shown in figure and arrange the apparatus according to the arrangement diagram. 2. Connect the resistance wire or resistance coil whose...
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  • TRANSIENT ANALYSIS OF A RESISTOR-INDUCTOR (RL) CIRCUIT
    TRANSIENT ANALYSIS OF A RESISTOR-INDUCTOR (RL) CIRCUIT TOM CARNEY Table of Contents 1. Introduction………………………………………………………………………………….Page 2 2. Theoretical Analysis………………………………………………………………………Page 3 3. Questions related to constructed circuit……………………………………….Page 5 4. Conclusion…………………………………………………………………………………….Page 6 5. Works cited……………………………………………………………………………………Page 6 6. Illustrations…………………………………………………………………………………….Page 7-8 Transient...
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  • ECT122 W3 ILab 1
    ECT 122 Week 3 iLab #1 Parts: Breadboard DC Power Supply Hand Held DMM Test leads Wire 1.0kΩ resistor 2.2kΩ resistor 3.3kΩ resistor 1. Identify the type of the following circuits as either serial or parallel. 2. List four characteristics of a series circuit. 1) The total current is the same everywhere in the circuit. 2) A series circuit only has one path for current to flow. 3) The sum of all the voltages sources is equal to the sum of all the voltage...
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  • EE101L - Experiment 1: Answers to Questions
    Answer to Questions 1. Describe the type of meter movement used in the analog meters. The two analog meters—namely, the voltmeter and the ammeter—employ the d' Arsonval meter movement. The movement consists essentially of a movable iron-core coil mounted on a pivot between the poles of a permanent magnet. When current flows through the coil, it creates a torque which causes the pointer to deflect. The amount of current through the coil determines the deflection of the pointer, which is...
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  • Circuits Experiment 1 - 908 Words
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    An Investigation of Ohm’s Law Stephen McGill (22044566) Results from test using 25Ω Resistor: Voltage(Volts) | Current(mA) | Resistance(Ohms) | 0 | 0 | 0 | 0.57 | 20 | 28.5 | 1.01 | 40 | 25.25 | 1.49 | 60 | 24.83 | 2.01 | 80 | 25.12 | 2.51 | 100 | 25.1 | 3.0 | 120 | 25.0 | 3.51 | 140 | 25.0 | 4.0 | 160 | 25.0 | 4.5 | 180 | 25.0 | 5.03 | 210 | 23.95 | 5.52 | 230 | 24.0 | 6.02 | 250 | 24.08 | 6.51 | 270 | 24.1 | 7.0 | 290 | 24.13 | 7.5...
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  • Ohm S Law - 1182 Words
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  • Classification of Chemical Substance - 786 Words
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  • Brandico Barr Module 3
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  • 7P's of Marketing - 538 Words
     Data Analysis: In connection with the familiarization with electrical instruments, this experiment allowed us to make a simple circuit and measured some circuit elements such as voltage, resistance, current and power. From the obtained data we can see the relationship of the resistance and current. The Ohm’s Law was very apparent with the data gathered. In Ohm’s Law we know that when voltage and other factors are held constant, the current ( I ) is inversely proportional with resistance...
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  • Simple Voltage and Current Measurement
    Experiment I Simple Voltage and Current Measurement Objective The objective of this experiment was to measure the Voltage and Current. Upon completion of this experiment I was able to: 1) Set the DC power supply to a specific voltage. 2) Properly connect the voltmeter to measure voltage. 3) Measure current with the ammeter. 4) Measure resistance with the ohmmeter. 5) Determine the accuracy of a given meter reading. Theory The theory...
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  • Series and Parallel Circuit Elements
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  • 3 - 764 Words
    Alexandria Hayford Honors Physical Science Instructor Durbin 03/06/15 3.03 Build Your Own Circuit Wokrsheet Part 1: Answer the following questions (20 points) 1. Name and describe the components needed to make a complete circuit. In order to make a complete circuit, you must include a voltage source and an unbroken path. The voltage source is typically a battery, and it is where the electric current is first created by the moving electrons. The unbroken path is generally made out of wire, and...
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  • lab 1 - 326 Words
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  • Sample-Formal-Lab Report
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  • Circuit 3 - 721 Words
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  • LAB REPORT - 872 Words
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  • QA Assignmen - 849 Words
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  • ECT122 W6 ILab 1
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  • To investigate the discharging of a capacitor through a multimeter as voltmeter
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  • Kirchoffs's Laws - 2249 Words
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  • Planning & Designing Experiment: Investigating the current - potential difference relationship (IV Characteristics) for a metal wire.
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  • Experiment: Kirchoff's Rule - 882 Words
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  • Ac Circuits - 657 Words
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  • Ohms Law - 1861 Words
    Investigating Ohm’s Law Introduction/Background Current is the rate of the flow of energy; an electric current is the flow of electrical charge around the circuit. It is measured in ohms (Ω). The quantity of flow in an electric circuit is dependent on the ohmic value of the resistance. The amount of resistance in a given circuit is stationary and is not dependent on the current. “The higher the voltage of a battery, the more potential energy per coulomb of charge it can supply.” (1) It...
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  • Series and parallel circuit problem solving
    Introduction My research is based on how Ohm’s law is derived and how it is used to solve problems in series and parallel connection and the resistance of a material. Ohm's Law shows the relationship between the voltage (V), current (I) and resistance (R). It can be written in three ways: V = I × R or I =V/R or R = V/I The resistance (R) of a material depends on Its length, cross-sectional area, The resistivity, and Resistance also depends on temperature,...
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  • Copper Wire Sizes - 517 Words
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  • Neutral Grounding Resistor - 1373 Words
    Neutral Grounding Resistors (NGR) for Transformers & Gen. Sets.: NGR is employed in AC distribution networks to limit the fault current which would flow from the transformer or generator neutral star point in the event of an earth fault in the systems. It is used when the neutral of supply transformer is accessible and its own impedance is not enough to limit fault current. The rating of the protection relays within the required time. For Grounding Neutral of Transformer or Generator,...
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  • Enhancement of Multi-Machine Power System Performance Using Resistive Superconducting Fault Current Limiter
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  • Ohm's Law - 437 Words
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  • A PH Meter Is An Electronic Device Used
    A pH meter is an electronic device used for measuring the pH (acidity or alkalinity) of a liquid (though special probes are sometimes used to measure the pH of semi-solid substances). A typical pH meter consists of a special measuring probe (a glass electrode) connected to an electronic meter that measures and displays the pH reading. A colorimeter is a device used in colorimetry. In scientific fields the word generally refers to the device that measures the absorbance of particular...
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  • Comparative Study on the Characteristics of Egg Shells of Some Bird Species
    BASIC ELECTRICITY TEST TEST INFORMATION PAMPHLET WHY DO AT&T AND ITS AFFILIATES TEST? When individuals are being considered for our available job openings, they go through a selection process to measure their knowledge, skills and abilities to determine if they can perform the jobs in a satisfactory manner. It is to the advantage of both you, as a job candidate, and the company that only those who can perform at acceptable levels be placed on the job. Research has shown that tests provide...
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  • The Sotry of My Life - 383 Words
    SEKOLAH VOKASIONAL NAKHODA RAGAM BDTVEC SKILLS CERTIFICATE 2 IN COMMUNICATION TECHNOLOGY MEASURE ELECTRICAL QUANTITIES Practical #1 – Measure Electrical Resistance Topic – Measure the Resistance using Analogue & Digital Multimeter Objective – Familiarize and learn how to use Multimeter Equipment/Tools * Resistor -10 * Digital Multimeter * Analogue Multimeter * Breadboard Circuit Diagram Block Diagram...
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  • Due Process of the Law - 286 Words
    Experiment 3: Oscillators and timers Introduction The NE555 chip which operates at 5v, utilizes two comparators for temperature stability. This chip is capable of producing oscillations. It is made up of 8 pins and its oscillation mode is controlled by two resistors and a capacitor. Each pin is set to perform a function. Pin 1 serves as ground. Pin 2 is the trigger - the input to the lower comparator which sets the latch that causes output to go high. Pin 3 serves as the output....
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  • Magnetism - 1683 Words
    Student Exploration Circuits Vocabulary ammeter, circuit, current, electron, ohmmeter, Ohms law, parallel circuit, resistance, resistor, series circuit, voltage Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Strings of holiday lights can be designed in one of two ways. In some strings of lights, each light is connected to the others along a single wire (in series). In others, each light is attached to its own wire (in parallel). Suppose a single light bulb burns out. How do you...
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  • Series and Parallel Circuits Serve Different Purposes in Households
    3. Series and parallel circuits serve different purposes in households 1. Identify the difference between series and parallel circuits Series is when the components line up after one another, thus there is only 1 path. In parallel there are multiple paths. Advantages of using parallel circuitry over series circuitry in household wiring include: * You can have some devices on and others off at the same time. * If one device fails the others still work. * All devices receive...
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  • A Wheatstone Bridge - 2270 Words
    A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. Its operation is similar to the original potentiometer. It was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. One of the Wheatstone bridge's initial uses was for the purpose of soils analysis and comparison.[1]...
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  • Rc Circuits - 875 Words
    RC Circuits •In this presentation, circuits with multiple batteries, resistors and capacitors will be reduced to an equivalent system with a single battery, a single resistor, and a single capacitor. Kirchoff's laws will be stated, and used to find the currents in a circuit. In addition, the equation for the time-constant of an RC circuit will be derived. Ohm's Law  When a battery is connected to a resistor, the battery will cause a current to flow through the resistor. The larger the...
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