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 + terminal
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Resistor A Resistor B Resistor C Resistor D V±ΔV(V) 6.748±0.001 7.759±0.001 9.061±0.001 10.383±0.001 I±ΔI(mA) 44±0.5 35±0.5 23±0.5 10±0.5 V/I±ΔR(Ω) 153.36±1.7 221.69±3.2 393.96±8.61 1038.30±52.02 Rm±ΔRm(Ω) 145.21±0.01 214.90±0.01 385.60±0.01 907.50±0.01 VI-2 (V‚ I) pairs for Resistor A using a DC power supply V-2 f = 0 Hz # V(Volts) I(mA) 1 1.994 13 2 3.807 25 3 4.920 32 4 6.653 44 5 7.436 49 (V‚ I) pairs for Resistor A using
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voltage and resistance as part of Ohm’s law. The second part consisted of how to use the variables in an electrical current. Knowing how the variables are used in calculations and electrical currents is important in determining the value of the resistor and how it affects the current in the circuit. A device known as the multimeter is used to find the voltage and current in the circuit. Ohm ’s principal discovery was that the amount of electric current through a metal conductor in a circuit is
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Developing a mobile phone based home automation and security system Submitted in partial fulfillment of the Degree of Bachelor of Technology Dec – 2011 Enrollment. No. Name of Student Name of supervisor(s) - 081015‚ 081132‚ 081131 -Nipun‚ Aditya‚ Sharad -Pradeep Garg DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING JAYPEE UNIVERSITY OF INFORMATION TECHNOLOGY‚ WAKNAGHAT TABLE OF CONTENTS Chapter No. Topics Summary List of Figures List of Symbols and acronyms Introduction Review /
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School for Electronic and Computer Engineering Faculty of Engineering School of Electrical‚ Electronic & Computer Engineering EERI 213 VOLTAGE DIVIDER CIRCUIT Completed by: Mr I Coetzee 22678778 Submitted to: Dr P. van Vuuren 19 FEBRUARY 2013 1 School for Electronic and Computer Engineering DECLARATION I‚ Iwan Coetzee‚ declare this report is of my own work. Whenever contributions of others are involved‚ every effort was made to indicate this clearly‚ with due reference
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right. To apply the loop rule you would add the voltage changes of all circuit elements around the chosen loop. The figure contains two junctions (where three or more wires meet)--they are at the ends of the resistor labeled R3 . The battery supplies a constant voltage Vb ‚ and the resistors are labeled with their resistances. The ammeters are ideal meters that read I1 and I2 respectively. The direction of each loop and the direction of each current arrow that you draw on your own circuits are
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inside that allows power to run through. Power then runs to various capacitors to store up power before running to the inductor that converts the power to usable power for the MOSFETs. As the power runs through the circuit‚ it eventually comes to resistors which slow up the current flow. Sound comes in through the inputs and to the MOSFET amplifiers. Then sound goes to the sound dampeners to clean the sound waves up before going to the sound outputs. To better understand the amp and its components
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parallel circuits. The laws on series and parallel resistors‚ as well as the color code for resistors were observed to calculate the total resistance. The proper connection for ammeter and voltmeter was also conducted and the readings for the voltage and current were obtained. 1. Introduction The objectives of the experiment are to determine the resistance of a resistor based on its color code and to verify the laws on series and parallel resistors‚ as well as the cells. Some practical applications
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Automatic Street Light [pic] Submitted By: Introduction Automatic Streetlight needs no manual operation for switching ON and OFF when there is need of light. It detects itself weather there is need for light or not. When darkness rises to a certain value then automatically streetlight is switched ON and when there is other source of light i.e. day time‚ the street light gets OFF. The sensitiveness of the street light canal so be adjusted
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Table of Contents List of tables 3 List of Figures 4 1Introduction 5 2 Circuit diagram 6 3 Circuit components 7 3.1 LDR 7 3.2 Resistors 8 3.2.1 Color code 8 3.3 IR LED 9 3.4 LED 11 3.5 OP-AMP 12 3.5.1 OP AMP LM 324 13 3.6 Transistor 15 3.6.1 Transistor 2N2222 15 3.7 SCR 16 3.7.1 SCR C106MG 18 C106MG 19 3.8V Battery 19 3.9 Photo diode 20 Principle of operation 21 3.9.1 IR Photo diode 21 3.10 Switches 22 3.11 Buzzer 23 3.11.1Mechanical buzzer 24 3.11.2 Electromechanical buzzer 24 3.11.3 Piezo buzzer
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