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CURRENT AND RESISTANCE - PHYSICS 212 CURRENT AND RESISTANCE...

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-1- PHYSICS 212 CURRENT AND RESISTANCE WORKBOOK _____________________________________________ STUDENT’S FULL NAME
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-2- PHYSICS 212 OUTLINE CURRENT AND RESISTANCE 1 ELECTRIC CURRENT Define electric current : What is meant by the phrase conventional current ? 2 A MICROSCOPIC VIEW: CURRENT AND DRIFT SPEED Describe 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? 3 CURRENT AND VOLTAGE MEASUREMENTS IN CIRCUITS What meter is used to measure current? What meter is used to measure voltage differences?
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-3- Draw a circuit diagram showing how these two meters would be connected to measure the current through and the voltage drop across a resistor. What are the SI units of current and voltage drop? 4 RESISTANCE AND OHM’S LAW What is resistance ? What is a resistor ? How are the quantities I , V , and R related? Write an equation? What is this relation called? 5 RESISTIVITY List and define all the factors that contribute to the value of a resistor’s resistance. What are the SI units of resistivity ?
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-4- 6 ELECTRICAL ENERGY AND POWER Define 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.
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-5- PHYSICS 212 MULTIPLE CHOICE QUESTIONS CURRENT AND RESISTANCE Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
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