Matter and Interactions
4th Edition
ISBN: 9781118875865
Author: Ruth W. Chabay, Bruce A. Sherwood
Publisher: WILEY
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Textbook Question
Chapter 19, Problem 2Q
How is the charging time for a capacitor correlated with the initial current? That is, if the initial current is bigger, is the charging time longer, shorter, or the same? Explain briefly.
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A large capacitor of 3000 µF is charged by a constant current. After 1 minute it reaches a voltageof 100 V. At that voltage, the charging circuit is disconnected.a) Calculate the charging current.b) A second identical capacitor is connected across the capacitor, using wires with 1 kΩ resistance. Sketch a graph of the voltages on the two capacitors as a function of time, withappropriate numbers and units marked on the axes.
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Matter and Interactions
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