Choose true or false for each statement regarding the resistance of a wire.The resistivity does not depend on the temperature of most metal wires.While maintaining a constant voltage V, the current I increases when the resistivity p of a wireincreases.While maintaining a constant voltage V, the current I decreases when the cross-sectional area A of awire contracts.Submit Answer Tries 0/2Choose true or false for each statement regarding resistors in a circuit.Three identical resistors in series have triple the resistance of each individual one.If you connect two different resistors in parallel in a circuit, then the voltage across each of them isdifferent.If you connect two different resistors in series in a circuit, then the current that flows through each ofthem is different.Submit Answer Tries 0/2

1 The resistivity of wire depends on temperature and it usually increases with temperature. Hence…

Choose true or false for each statement regarding the resistance of a wire. The resistivity does not depend on the temperature of most metal wires. While maintaining a constant voltage V, the current I increases when the resistivity p of a wire increases. While maintaining a constant voltage V, the current I decreases when the cross-sectional area A of a wire contracts.

Choose true or false for each statement regarding the resistance of a wire. The resistivity does not depend on the temperature of most metal wires. While maintaining a constant voltage V, the current I increases when the resistivity p of a wire increases. While maintaining a constant voltage V, the current I decreases when the cross-sectional area A of a wire contracts.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter21: Circuits And Dc Instruments

Section: Chapter Questions

Problem 53PE: A 1,00-?O voltmeter is placed in parallel with a 75.0kresistor in a circuit, (a) Draw a circuit...

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A 1,00-?O voltmeter is placed in parallel with a 75.0kresistor in a circuit, (a) Draw a circuit diagram of the connection, (b) What is the resistance of the combination? If the voltage across the combination is kept the same as it was across the 75.0-kresistor alone, what is the percent increase in current? (d) If the current through the combination is kept the same as it was through the 75.0-kresistor alone, what is the percentage decrease in voltage? (e) Are the changes found in parts (c) and (d) significant? Discuss.
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