CURRENT AND RESISTANCE

CURRENT AND RESISTANCE - -1-PHYSICS 212CURRENT AND

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Unformatted text preview: -1-PHYSICS 212CURRENT AND RESISTANCEWORKBOOK_____________________________________________STUDENTS FULL NAME-2-PHYSICS 212 OUTLINECURRENT AND RESISTANCE1ELECTRIC CURRENTDefine electric current:What is meant by the phrase conventional current?2A MICROSCOPIC VIEW: CURRENT AND DRIFT SPEEDDescribe how charges move in a conductor in electrostatic equilibrium.Describe how charges move in a conductor when an electric field is present.Give an approximate value for the drift speed of electrons in a conducting wire?3CURRENT AND VOLTAGE MEASUREMENTS IN CIRCUITSWhat meter is used to measure current?What meter is used to measure voltage differences?-3-Draw a circuit diagram showing how these two meters would be connected to measure the currentthrough and the voltage drop across a resistor.What are the SI units of current and voltage drop?4RESISTANCE AND OHMS LAWWhat is resistance?What is a resistor?How are the quantities I, V, and Rrelated? Write an equation? What is this relation called?5 RESISTIVITYList and define all the factors that contribute to the value of a resistors resistance. What are the SI units of resistivity?-4-6 ELECTRICAL ENERGY AND POWERDefine the physical quantity power?How is energy supplied to a circuit?How is the rate of energy supplied calculated?How is energy consumed by a circuit?How is the rate of energy consumed calculated?Explain what is meant by the unit Kilowatt@Hour.-5-PHYSICS 212 MULTIPLE CHOICE QUESTIONSCURRENT AND RESISTANCEMultiple ChoiceIdentify the letter of the choice that best completes the statement or answers the question.____1. The current in an electron beam in a cathode-ray tube is measured to be 70 :A. How many electronshit the screen in 5.0 s? (e= 1.6 10-19C)A. 2.2 1011 electronsD. 8.8 1018electronsB. 8.8 1013electrons...
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This note was uploaded on 04/07/2009 for the course PHY 212 taught by Professor Dayton during the Spring '09 term at American International.

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CURRENT AND RESISTANCE - -1-PHYSICS 212CURRENT AND

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