# Electric current Essays & Research Papers

## Best Electric current Essays

• Electric Current - 746 Words
Name _____________________ Battery, resistance, and current – Lab 17 Go to http://phet.colorado.edu/en/simulation/battery-resistor-circuit and click on Run Now. 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 +...
746 Words | 3 Pages
• Electric Current and Current Flow
GRADE: 8th TEACHER: Mrs. Russo I. Statement of Purpose and Hypothesis: Our purpose for this project was to find out what fruits and vegetables could generate an electric charge. We also wanted to find out which ones had the greatest and least charge. Our hypothesis stated that the potato would have the greatest...
437 Words | 3 Pages
• 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...
722 Words | 4 Pages
• Electric Current and Portable Electricity
﻿Electricity has had a huge impact on our lives since the day it was discovered. It has changed the way we do everything. Electricity is used today with everything, just think about how many things you use everyday that need electricity. Everything that being used in todays world is electricity from an iphone to the internet to a tv. There is a statement out there that says if all the worlds electricity was turned off for 24 hours the whole world would fall apart. This is true, for about 95% of...
381 Words | 2 Pages
• ## All Electric current Essays

• Electric Currents Review - 1625 Words
﻿Name ________________________ Date ___________ Block ___ Electric Currents Review 1) When work is done on a positive test charge to move it from one location to another, potential energy ______________ (increases, decreases) and electric potential _____________________ (increases, decreases). 2) When a positive test charge naturally moves from one location to another (without the exertion of a non-conservative force), potential energy _________________ (increases, decreases) and electric...
1,625 Words | 7 Pages
• Magnetic Effects of Electric Current
Magnetic effect of electric current is one of the major effects of electric current in use, without the applications of which we cannot have motors in the existing world. A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. The nature of the magnetic field lines around a straight current carrying conductor is concentric circles with centre at the axis of the conductor. The direction of the magnetic...
1,420 Words | 4 Pages
• 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...
297 Words | 2 Pages
• Chemical Effects of Electric Currents
CHEMICAL EFFECTS OF ELECTRIC CURRENT Conductivity of Liquid Electrolysis Electroplating www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond The materials, which allow electric current to pass through them, are good conductors of electricity. On the other hand, materials, which do not allow electric current to pass through them easily, are poor conductors of electricity. You know that metals such as copper and aluminum conduct electricity whereas...
953 Words | 3 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...
914 Words | 5 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...
789 Words | 3 Pages
• Lab 3 A Model For Circuits I Electric Current Prelab
﻿Name: Aaron Banks Section: Thursday PRELAB: A MODEL FOR CIRCUITS I: ELECTRIC CURRENT 1. What do you predict for the rankings of the brightness of bulbs A, B, and C in Figure 2-1? A>B>C A being the brightest 2. How do you predict that changing the direction of the current by reversing the connections to the battery in Figure 2-1 would change the rankings in (1)? I don’t think it will change at all. The brightness should be the same in diagram b and diagram a it should also...
270 Words | 2 Pages
• Electric Shock - 7146 Words
Electric Shock Anyone What Is This Module About? Nowadays, electrical appliances are commonly seen in every household. In your home, you probably have a television set, a radio, a karaoke player, a VCD player and other electrical appliances. But have you ever wondered how these appliances work? All of these need electricity to work. In this module, you will be introduced to the basic concepts of electricity. You will also learn about its uses. After going through the module, you should be...
7,146 Words | 29 Pages
• Electric circuit - 877 Words
Aim: To design a simple electrical circuit for Doctor's Surgery to let people know when to enter and also to research and learn more about parallel and series circuits. Introduction I am going to design an electric circuit for a Doctor's surgery. There are two types of circuit's Parallel circuit, and Series circuit. First I am going to explain what a circuit is and what the differences they have are. An electric current is a flow of charge. The charges are given energy and made of flow...
877 Words | 4 Pages
• Current Balance - 775 Words
﻿Current Balance PHY 114 10/29/2013 Abstract: The purpose of this experiment was to understand the current balance, current balance is an apparatus that allows measurement of the small force between two current carrying conductors. It consists of two parallel horizontal bars, which are connected in series. The current flows in opposite directions in the two conductors so there is a repulsive force between them, by Newton’s third law there are equal and opposite forces on both wires. In...
775 Words | 3 Pages
• 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...
714 Words | 3 Pages
• Physics Electric Eels - 1782 Words
﻿Sakib Khan Electric Eels – Physics The animal that is usually known as electric eel is in fact not really an eel but a freshwater species related more to the carp family or catfish family. These unique freshwater predators got their name from the immense electrical charge that they can easily generate to stun or even kill their preys and dissuade predators. Electric eels can grow extremely large which usually can reach as high as 8 foot long and weigh a great amount of 45lbs. In addition to...
1,782 Words | 5 Pages
• Current Electricity Term Paper
Current electricity: 1) Give an equation to calculate resistance. 2) Give the meaning and the unit of each symbol. 3) Complete the following table Resistance (Ω) | Current strength (A) | Potential difference (v) | | 12 | 38 | | 0.4 | 32 | 75 | 96 | | 36 | 15 | | 75 | | 0.25 | 135 | | 27 | 4) An electric frying pan is connected to a 220V power point. If the current in the element is 12 A, calculate the resistance of the element 5) What will the...
814 Words | 7 Pages
• Eddy Current: Amperage - 1200 Words
Eddy Current 1. The principles of eddy current testing depend on the process of electromagnetic induction. 2. This process includes a test coil through which vary or alternating current (AC) is passed. 3. A varying current flowing in a test coil produces a varying electromagnetic field around the coil, As shown in this diagram Amperage * # of coils= strength of magnetic field 4. The electromagnetic field produced around the coils is directly...
1,200 Words | 5 Pages
• Current Transformers Coursework - 671 Words
Observation Sheet Secondary resistance measurement Protection CT secondary resistance = 0.3 Ω Measuring CT secondary resistance = 0.4 Ω Polarity check Primary current flow is from P2 → P1 Secondary current flow when, Switch ON S2 → S1 Switch OFF S1 → S2 Ratio check Protection CT secondary current = 0.6 A Measuring CT B secondary current = 0.57 A Magnetizing Curve Measuring CT Secondary voltage(V) | Secondary current(A) | 6 | 0.1 | 7.04 | 0.23 | 9.06 | 0.98 | 11.08...
671 Words | 4 Pages
• Eddy Current Braking System
International Journal of Applied Engineering and Technology ISSN: 2277-212X (Online) An Online International Journal Available at http://www.cibtech.org/jet.htm 2011 Vol. 1 (1) January-April/ pp104-113/Tripathi and Raj. Research Article EDDY CURRENT BRAKING EMBEDDED SYSTEM *Virendra Kumar Maurya1, Rituraj Jalan1, H. P. Agarwal1, S. H. Abdi2, Dharmendra Pal2, G. Tripathi2 and S. Jagan Raj3 1 Department of Electrical Engineering, Shekhawati Engineering College, Dundlod, Rajasthan, India 2...
4,993 Words | 15 Pages
• voltage and current law - 631 Words
Passive Electronic Components and Circuits Laboratory 5 Kirchhoff’s voltage and current laws Objective: o Kirchhoff’s voltage law (KVL), o Kirchhoff’s current law (KCL), o Verify Kirchhoff’s voltage and current laws using a given circuit. Equipment: o Digilent Electronics Explorer Board, o Digital Multi-Meter, o Assorted resistors. Theoretical support: o Laboratory 3, o Laboratory 4, o Lecture 4 (Microsoft Power Point Support):  Kirchhoff’s laws,  Applying Kirchhoff’s laws....
631 Words | 5 Pages
• Test Question Paper on Electric Circuits
First Summative Test in Science 5 - 3rd Grading Period Name_____________________________________________________Dat e__________________________ Teacher____________________________________________________G r.& Sec._____________________ I. Encircle the letter of the correct answer. 1. Which of these is a source of electrical energy? a. battery b. light bulb c. switch 2. Which of these controls the flow of electric current? a. battery b. light bulb c. switch 3. How does the...
397 Words | 2 Pages
• Electric Charge and Public Electricity Supply
Every single day we use electricity to make the things around us work. From the tape player to the electric pumps that send hot water to each of our homes everyday. Without electricity the lights go off, water is not heated, the television goes off, and outside the traffic lights do not work and as a result the city is immediately congested with traffic jams and choke ups in the street. Without that electricity we have everyday the basic things we use do not function. The book I chose to...
761 Words | 3 Pages
• Electricity, Magnetism and My Electric Motor!
Electricity, Magnetism, and My Electric Motor! The objects around us contain billions and billions of atoms, and each atom contains many protons and electrons. The protons are located in the center of the atom, concentrated in a small area called the nucleus. The electrons travel around the nucleus in orbitals. The protons are trapped inside the nucleus and can't get out. As a result, it is moving electrons that are primarily responsible for electricity. Electricity is related...
709 Words | 2 Pages
• Current, Voltage, Resistance and Ohms Law
Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I. The standard unit is the ampere, symbolized by A. One ampere of current represents one coulomb of electrical charge (6.24 x 1018 charge carriers) moving past a specific point in one second. Physicists consider current to flow from relatively positive points to relatively negative points; this is called conventional current or Franklin current....
1,011 Words | 3 Pages
• Cause and Effects of Electric Shock to a Human Body
Chapter I Introduction Background of the Study Did you know that all of us are exposed to the risk of electric shock? We are all surrounded by electrical appliances and machinery which exposed us to risk. This study allows us to know the basic information, the causes and effects, and the preventive measure because according to the National Safety Council there are about 600 to 1000 people die every year from electrocution. It continues to rank as the fourth highest cause of industrial...
1,890 Words | 5 Pages
• Prepaid Retail Electric Service Sample Survey Questionaire
SURVEY QUESTIONAIRE Topic: PERCEPTION OF PREPAID ELECTRIC METERING SYSTEM OF LAOAG CITY RESIDENTS Name: _______________________________________Age: ____ Status: ( ) Single ( ) Married Address: _____________________________________________ Gender: ( ) Male ( ) Female Please answer the following questions: 1. Are you aware about the prepaid electrical metering system? Why? ( ) Yes ( ) No...
272 Words | 2 Pages
• Current and Resistance of a Wire and the Affects When the Length Changes
Current and Resistance Physics Investigation Aim: Investigate how the length of a wire affects the current and resistance of a wire. Prediction and Hypothesis: I think as you increase the length of the Constatan wire, you also increase the amount of resistance. The current is the flow of electrons; the current is dependent on the amount of voltage, which is applied. Voltage is the push given to the current. The current has to go through a circuit, which contains resistance so if you...
806 Words | 8 Pages
• What Factors Affect the Current Flowing Through a Wire?
I am going to investigate how the resistance of the wire affects a current flowing through a wire. I know that as resistance changes, current changes, as Ohm's law: I = V/R. If one part of an equation changes, the equal must be done to the opposite side. To detect how resistance affects current, I must first discover what factors affect resistance. These factors are: · Length of the wire  if a wire is longer; there are more particles for electrons to move through, and therefore more...
953 Words | 3 Pages
• Force Between 2 Parralel Current Carrying Conductors
The Force Between Two Parallel Current Carrying Conductors Aim: To observe the direction of the forces between two parallel CCDs. Hypothesis: That the CCD with current flow in the same direction will be attracted to each other and CCDs with current flow in opposite directions will repel. Apparatus: -Variable DC power supply * Variable resistor (15ohm rheostat) * Connecting wires * Retort stand * Clamp * Two pieces of thick card or balsa wood 10cmx10cm * Two strips...
374 Words | 2 Pages
• Practical Applications of Heating Effects of Elecrtict Current
The flowing of current through conductor produce heat. We are using this heat due to flow of current in our daily life as in electric iron, electric bulb, electric fuse, electric heater and more. Heating effect of electric current are below (i) Electric iron: In an iron the upper part is grooved. In this groove a coil is placed. Mica as an insulator is placed between the metal part and the coil, so that there is no electrical connection between them. Mica is a bad conductor of electricity but...
364 Words | 1 Page
• Magnetic Induction of a Current-Carrying Long Straight Wire Magnetic Induction of a Current-Carrying Long Straight Wire
a) Derive an expression for the magnetic field B at a point of distance r, from an infinitely long wire that carries a current I. Your derivation should include the direction of the magnetic field with respect to the direction of current flow. Verify your expression by using the experimental results obtained. If your results do not show the expected relationship, explain why. In order to derive an expression for the magnetic field B at a point of distance r, from an infinitely long wire that...
376 Words | 2 Pages
• Battery-Resistor Circuit: Interplay between the Voltage, Resistance, Current, and Temperature in a Conductor
PHET 8 Battery-Resistor Circuit Name Course Date Learning Goals To visualize the interplay between the voltage, resistance, current and temperature in a conductor Check “show battery” and “show cores”, watch what happens, adjust some variables 1. Why do electrons (blue dots) move? The flow of current (+) is opposite to the flow of the electrons. ; note if toward or away from + terminal of the battery. The electrons move due to voltage of the...
494 Words | 2 Pages
• Planning & Designing Experiment: Investigating the current - potential difference relationship (IV Characteristics) for a metal wire.
Title: Investigating the current - potential difference relationship for a metal wire. Aim: To design an experiment that will facilitate an I - V Graph to be ascertained of a metal wire and thus find the resistance of the wire by deriving the inverse of the gradient of the graph. Skill: Planning & Designing Theory: Resistance is a property of any object or substance to resist or oppose the flow of an electrical current. The quantity of resistance in an electric circuit determines the amount of...
1,264 Words | 3 Pages
• 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....
1,528 Words | 4 Pages
• tutor kimia - 729 Words
﻿ 1. What is a simpler way to expressing 0.000 018 A? 2. What is a simpler way to expressing 5 000 000 V? 3. An electric motor is developing 8.5kW at a speed of 900r/min. Calculate the torque available at the shaft. 4. A generating station has a daily output of 160MW h and uses 300 t (tones) of coal in the process. The coal releases 7 MJ/kg when burnt. Calculate the overall efficiency of the station. 5. A lift of 250 kg mass is raised with a velocity of 6 m/s. If the driving motor has an...
729 Words | 3 Pages
• Science Practical - 539 Words
Science practical report (The relationship between voltage and Current) Aim: To find out how current, voltage and résistance in a electric circuit are related. Hypothesis The reading for both voltmeter and ammeter will have complete different results in relationship to the resistor, voltage and current. That voltmeter will have a higher reading than ammeter. Materials * Power pack * Piece of nidrome * 50 cm long or a resistor * Hear proof mat * 6 connecting wires...
539 Words | 3 Pages
• Does Electricity Move Better Through Thick Wires or Thin Ones
My research is to determine if electricity moves better through thick wires or through thin wires. For this experiment I used two size D batteries, two flashlight bulbs, one 6.5 inch thin steel wool piece, one 6.5 inch thick steel wool piece, two 2 inch pieces of straw, and some electrical tape. Steel wool is a material made from thin fibers of steel made into a pad. (http://www.wisegeek.com/l-what-is-steel-wool.htm) There are many uses for steel wool. It can be used for sanding furniture,...
448 Words | 2 Pages
• OHMS LAW - 571 Words
Study about Ohm's Law: • To verify Ohm’s Law by calculating voltage, current and resistance based on different views of Ohm’s law as well as measuring those values to compare the theoretical results with the actual results. • To verify the relationships of R-I, V-I and R-V given ohm’s law by increasing one parameter while holding the other parameter constant, then measuring and calculating equivalent results of the third parameter. What is Ohm's Law: Ohm's Law is made from 3 mathematical...
571 Words | 3 Pages
• Conductor Investigation - 1053 Words
Science February 6 2009 - February 19 2009 Conductor Investigation Calvin Chang 8.2 Stage 1: Planning the Experiment Introduction ! By “electric current”, I mean by the rate at which electric charges moves through a circuit, the electric charges can either be ions or electrons. They are measured in ammeters and the unit that is measured in is ampere which is the number of charges that passes through per second. There are many factors which would affect the electric current, like the voltage...
1,053 Words | 3 Pages
• Reverse Engineering Paper - 2103 Words
For our project we decided to disassemble and understand a Memphis 1 Channel Mono Block Amplifier. First we started by disassembling the amp down to the main circuit board. From there we assigned ourselves different components to understand what they were and how they worked inside the amp. We all researched our components and got back together to discuss and figure out the flow of power and operations of the amp worked. A general idea of what the amp does is as follows. Power comes into the...
2,103 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...
1,602 Words | 7 Pages
• Hai by the Water 345 - 634 Words
Chapter 3: Current and Resistance Quick Quizzes - QUESTIONS 1. Consider positive and negative charges moving horizontally through the four regions in Figure 17.2. Rank the magnitudes of the currents in these four regions from lowest to highest. (Ia is the current in Figure 17.2a, Ib the current in Figure 17.2b, etc.) (a) Id , Ia , Ic , Ib (b) Ia , Ic , Ib , Id (c) Ic , Ia , Id , Ib (d) Id , Ib , Ic , Ia (e) Ia , Ib , Ic , Id (f) none of these [pic] Figure 17.2 2. Suppose a...
634 Words | 3 Pages
• Essay - 463 Words
I plan to pursue a degree in Computer Engineering with an emphasis in technology engineering. I have been interested in this field from the time I work fixing my brothers bikes and mine and, most recently days helping my father after school. Just working with my hands is something that gets my attention and enjoy many new things. This is why I believe that computer engineering is the right career for my future. Ever since I was in seventh grade electronics has been one of my favorite subjects....
463 Words | 2 Pages
• An Investigation Into Electrical Resistance
Background Knowledge Resistance, in electricity, is a property of any object or substance to resist the flow of an electrical current. The quantity of resistance in an electric circuit determines the amount of current flowing in the circuit for any given voltage applied to the circuit. The resistance of an object is determined by the nature of the substance of which it is composed, its resistivity, accounting for its dimensions and its temperature. Resistivity is expressed in terms of...
1,182 Words | 4 Pages
• The Starting and Operation of China Jaw Crusher Is Very Important
The Starting and Operation of china Jaw Crusher is very important The correct starting and operation of china jaw crusher has great influences on making sure that the crushing equipment has the best working performance, and incorrect operation or the mistaken operation is often the main reason for the breakdown of the crushing machine. In addition, correct starting and operation of a crusher is conducive to improving the production capacity of the crushing equipment, for this reason, it is...
347 Words | 1 Page
• Voltmeter and Ammeter - 556 Words
How voltmeter and ammeter work Measuring Voltage Measuring the voltage between two points of an electrical current can be done with an instrument called a voltmeter. One type of voltmeter is a direct-current voltmeter. When taking a voltage reading the instrument is placed across the portion of the circuit that is to be measured. Direct-Current Voltmeter The direct-current voltmeter has a horseshoe shaped magnet, with a semicircular piece of soft iron attached to each end of the magnet. The...
556 Words | 2 Pages
• Resistance of a Wire - 2028 Words
Physics Coursework Objective: My objective in this experiment is to investigate one of the factors that affect the resistance of a piece of wire; the one I am investing is the length at constant temperature. My objective in this experiment is to investigate one of the factors that affect the resistance of a piece of wire. The factor I chose was length. Factors: There our four different things that affect the resistance of a wire: 1. The Length  because the wire is thinner than...
2,028 Words | 6 Pages
• Conductor Investigation Experiment Lab-Report
Conductor Investigation Experiment LabReport Introduction This experiment is about to test how will the nichrome wire effect the ampere of the electric current. All the possible factor that will effect to the volt of the current • The Length of the wire • The Diameter of the wire • Temperature • Magnetism Aim To determine the effect of the length of the wire on the ampere of the electric current. Hypothesis Nichrome is an alloy(a metal made by combining two or more metallic elements)...
594 Words | 3 Pages
• DC Electrical Measurements - 1217 Words
﻿Ana Patrizzi 02/19/2014 PARTNER: DC Electrical Measurements 1. Purpose: The purpose of this experiment is to learn and be familiar about the methods used in measuring Direct Current quantities as current and voltage and to calculate the resistance. We worked with the essential electrical instruments like the galvanometer, ammeter and voltmeter. 2. THEORY: Electric...
1,217 Words | 9 Pages
• Nanogenerators - 4298 Words
1. INTRODUCTION Nanotechnology is a field whose theme is the control of matter on an atomic and molecular scale, nanotechnology deals with structures of the size 100 nanometers or smaller. Nanotechnology is extremely diverse ranging from novel extensions of conventional device physics. Nanogenerator is a prototype nanometer-scale generator that produces continuous direct-current electricity by harvesting mechanical energy from such environmental sources as ultrasonic waves,...
4,298 Words | 15 Pages
• Physics Ohm Law - 457 Words
﻿Experiment No: EM-1 Title: Ohm’s Law, Meters, Resistivity I Purpose: The basic of simple electrical circuits and measurements is learned. Also, investigating the dependence of the resistance of a wire on its length, cross-sectional area, and the material of which it is made. By examining electrical resistance (R) through a metal conductor, the voltage (V) and current (I) through the conductor, the following principles will be demonstrated: 1.) Ohm’s Law 2.) Dependence of resistance...
457 Words | 3 Pages
• Gsce Physics Coursework - 1140 Words
GCSE Physics Coursework: PLANNING SECTION: Variables: Controlled variable- What you are keeping the same in your experiment to make it a fair test. In this experiment, I will keep the materials used to make the resistors and the temperatures to carry out the results the same throughout the process of the experiment and I will also keep the same thickness of wire. Independent variable- What you are going to change during the experiment to influence your results until you get an...
1,140 Words | 4 Pages
• 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...
1,210 Words | 7 Pages
• 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...
875 Words | 5 Pages
• The Affects of the Resistance of a Piece of Wire
Planning In this piece of coursework, I am going to investigate what affects the resistance of a piece of wire. Wire is made up of atoms. Electric current is a flow of electrons, and it is these electrons that collide with the nucleus of the atoms. Every time this happens, it causes resistance. The build up of friction is what produces the heat. There are many variables that could affect the resistance of the piece of wire:  Length  Potential difference  Tension  Temperature ...
1,794 Words | 5 Pages
• The effect of Length on the overall resistance of a circuit Rachit withcomments
﻿The effect of Length on the overall resistance of a circuit. Research question: How does the length of the conductive putty affect the over all resistance of a circuit? This experiment will be discussing how the length of the conductive putty wire affects the overall resistance of a circuit. The variables for this experiment are being used for a number of reasons, however one of the main reasons behind choosing this experiment is investing how length of an object is affected be the resistance....
1,080 Words | 5 Pages
• rfffgdgs - 1922 Words
CBSE Sample Paper-05 (Unsolved) SUMMATIVE ASSESSMENT –I SCIENCE (Theory) Class – X Time allowed: 3 hours Maximum Marks: 90 General Instructions: a) All questions are compulsory. b) The question paper comprises of two sections, A and B. You are to attempt both the sections. c) Questions 1 to 3 in section A are one mark questions. These are to be answered in one word or in one sentence. d) Questions 4 to 6 in section A are two marks questions. These are to be answered in about 30...
1,922 Words | 10 Pages
• Common Electrical Devices Used in Physics
Experiment #7 "Electric Devices and Meters" Physics  PHA202  PT2E Santos, Nickerson Jeff F. February 27, 2002 0001864 Experiment No. 7 Electric Devices And Meters OBJECTIVE: To familiarize the students with the different types of electric devices and meters. FOREWORD: In order to perform experiments dealing with electric circuits, you must become familiar first with the devices and meters needed for such experiment. Some of the...
1,851 Words | 8 Pages
• Preventing Drain Cover Theft
CHAPTER 1 : INTRODUCTION 1.1 Introduction Recently, we often hear cases of theft manhole made of steel. These thefts often occur because the steel is very valuable when sold. One of my neighbors asked if there are tools that can prevent theft drains. From there I got the idea to create an alarm that can prevent theft from stealing the drain cover becoming increasingly. We begin by examining the case drain theft either inside or outside the country. Too many cases that have occurred that...
3,965 Words | 18 Pages
• 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....
286 Words | 1 Page
• Physics Resistivity of a Wire - 1959 Words
AIM- OUR AIM WAS TO FIND OUT WHICH VARIABLES AFFECT RESISTANCE, AND WHICH ONE HAS THE GREATEST EFFECT. BACKGROUND INFORMATION: Resistance is the force that opposes the flow of electrons in a circuit. The equation for resistance is Ω=V/A. (Ohms equals Voltage divided by amps). Resistivity is a measure of how strongly a material opposes the flow of electrical current, There are four main factors that affect resistance: Length – this is because the electrons would bump into more atoms, the...
1,959 Words | 8 Pages
• emt1255 experiment #1 - 554 Words
﻿ Linearity and V-I Curves Experiment #1 Name Bikash kc 9/10/2013 1255L Table of Contents Objective: To get familiarize with the meaning of linearity by plotting the V-I (volt-ampere curves) characteristics of a linear device. We will plot the V-I curves of a few resistors to gain experience in plotting, and also to learn what is meant by Linearity. Equipment Low-Voltage dc supply (1-15v) VTVM Milliammeter...
554 Words | 4 Pages
• Revison Notes Physics Class 10 Chapter Eletricity
Grade 10 Electricity I Q t I = current Q = net charge flowing t = time 1A 1C 1s Unit: Q = Coulomb (C) I = Ampere (A) t = Second (s) Potential difference  Work done to move a unit charge from one point to another V W Q Unit  Volt 1 Volt 1 joule 1 coulomb 1V 1J C 1 Ohm’s law Current potential difference V I V = IR (R = resistance) Unit (R)  1 1V 1A (Ohm) Factors on which resistance depends 1. 2. R R l, when A and material constant l = length A, when l and material...
294 Words | 2 Pages
• Electricity and Magnetism - 1210 Words
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1,210 Words | 6 Pages
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Chelsea Samatra, Kenneth Ragus Samatra,Ragus 1 Ms. Daligcon Period 4 A Battery That Makes Cents Abstract Many coins in the pile will make the most electricity. If there are more coins in the pile, then the more electricity it can produce, because the more electrons you have, the more electricity you will get. Batteries are expensive, but you can make one for exactly 24 cents! In this experiment, you will make your own voltaic pile...
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673 Words | 3 Pages
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Introduction Background Theory The usual equation for measuring electric current flowing through a series is I = V/R. The current flowing in a series is affected by the voltage and the resistor that is also creating the series. Electric current is a flow of electric charge through a conductive medium. These charge is in a form of moving electrons in a wire. The SI unit for electric current is ampere (A) and can be measured by using a device called ammeter. Change in temperature can...
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513 Words | 2 Pages
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615 Words | 2 Pages
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Ohms law V=i×R Hypothesis Volts equal amps multiplied by resistance. if voltages are kept constant and current is decreased and temperature is kept at a mere 15C and the circuits resistance will increase. In the same way if resistance is increased current strength would decrease accordingly. Can I prove that in circuit volts equal amps multiplied by resistance? Aim To determine the volts in a circuit I will attempt an experiment, to design a circuit where volts are kept constant and...
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Electrolysis of Copper (II) Sulphate By: Celeste Matete Year 10 Electrolysis Electrolysis is a process in which electrolytes are broken down/ decomposed when an electric current passes through them. Electrolytes are substances that ionize when dissolved in solvents like water. Electrolytes include * Acids * Ionic compounds i.e. Bases and salts For example if an electric current is passed through lead bromide, an ionic compound, the substance is decomposed to form lead and...
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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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302 Words | 2 Pages
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﻿ A.C current meters Introduction An ammeter is a measuring instrument used to measure the electric current in a circuit. Electric currents are measured in amperes (A), hence the name. Neither type of basic dc PMMC meter movement will correctly indicate an alternating current. There are, however, four basic types of meter movement that will indicate ac values:- Thermocouple Hot wire Electrodynamometer Iron-vane Electrodynamic...
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It is possible to get electricity from a lemon (and a few other acidic fruits and vegetables) using two strips of metal. The most readily available combination is copper and zinc. The zinc piece can be taken from the casing of an old carbon "D" cell (battery); some zinc coated nails may work as well. The copper can be a coin containing a high amount of copper. (Note: some recent copper coins, including the newer U.S. pennies, contain low amounts of copper mixed with zinc. If in doubt, use a pure...
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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...
1,526 Words | 6 Pages
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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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The Sustainability of Experience — Investing in the Human Factor 28th Annual USSD Conference Portland, Oregon, April 28 - May 2, 2008 Hosted by Portland General Electric On the Cover Portland General Electric’s North Fork Dam, on the Clackamas River southeast of Portland, is a thin, variable-radius concrete arch dam with a maximum height of 207 feet and a thickness varying from 32 feet at the base to 8 feet at the crest. The spillway is a 200-foot-long gated ogee-type structure...
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﻿ELECTRICAL CONDUCTORS A conductor is an object or type of material which permits the flow of electric charges in one or more directions. For example, a wire is an electrical conductor that can carry electricity along its length. Physics All conductors contain electrical charges, which will move when an electric potential difference (measured in volts) is applied across separate points on the material. This flow of charge (measured in amperes) is what is meant by electric current. In...
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