College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question: A RC circuit has three components in it: a 12 V battery, a 225 microFarad (225 µF) capacitor, and a 72 kiloOhm (72 k2) resistor. a) Find the time constant of the RC circuit. b) If the capacitor is being charged, what is the potential difference of the capacitor 22 seconds after closing the circuit? c) Consider the capacitor is fully charged, such that it has the same potential difference as the battery. How long will it take to discharge the capacitor to a point that the current in the circuit is 50% of the original current's value? (Note: the original current's value was the value of current when the circuit was first closed.)
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Transcribed Image Text:Question: A RC circuit has three components in it: a 12 V battery, a 225 microFarad (225 µF) capacitor, and a 72 kiloOhm (72 k2) resistor. a) Find the time constant of the RC circuit. b) If the capacitor is being charged, what is the potential difference of the capacitor 22 seconds after closing the circuit? c) Consider the capacitor is fully charged, such that it has the same potential difference as the battery. How long will it take to discharge the capacitor to a point that the current in the circuit is 50% of the original current's value? (Note: the original current's value was the value of current when the circuit was first closed.)
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