21. Circuits You connect a switch in series with a 75 W bulb to a 120 V power source. a. What is the potential difference across the switch when it is closed (turned on)? b. What is the potential difference across the switch when it is opened (turned off)?

21. Circuits You connect a switch in series with a 75 W bulb to a 120 V power source. a. What is the potential difference across the switch when it is closed (turned on)? b. What is the potential difference across the switch when it is opened (turned off)?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 7CQ: The IR drop across a resistor means that there is a change in potential or voltage across the...

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Question

21. Circuits You connect a switch in series with a 75 W
bulb to a 120 V power source.
a. What is the potential difference across the switch
when it is closed (turned on)?
b. What is the potential difference across the switch
when it is opened (turned off)?

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