Qo Vo = 120 V C = 8.0 µF C2 = 4.0 µF We connect a capacitor C1 = 8.0 µF to a power supply, charge it to a potential difference Vo = 120 V, and disconnect the power supply. Switch S is open. (a) What is the charge Qo on C,? (b) What is the energy stored in C,? (c) Capacitor C2 = 4.0 µF is initially uncharged. We close switch S. After charge no longer flows, what is the potential difference across each capacitor, and what is the charge on each capacitor? (d) What is the final energy of the system?

Qo Vo = 120 V C = 8.0 µF C2 = 4.0 µF We connect a capacitor C1 = 8.0 µF to a power supply, charge it to a potential difference Vo = 120 V, and disconnect the power supply. Switch S is open. (a) What is the charge Qo on C,? (b) What is the energy stored in C,? (c) Capacitor C2 = 4.0 µF is initially uncharged. We close switch S. After charge no longer flows, what is the potential difference across each capacitor, and what is the charge on each capacitor? (d) What is the final energy of the system?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter20: Electric Potential And Capacitance

Section: Chapter Questions

Problem 43P

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

Vo
120 V
C = 8.0 µF
C2 = 4.0 µF
We connect a capacitor C = 8.0 µF to a power supply, charge it to a potential difference
Vo = 120 V, and disconnect the power supply. Switch S is open.
(a) What is the charge Qo on C,?
(b) What is the energy stored in C,?
(c) Capacitor C2 = 4.0 µF is initially uncharged. We close switch S. After charge no longer
flows, what is the potential difference across each capacitor, and what is the charge
on each capacitor?
(d) What is the final energy of the system?
12,800 J
25,000 J
O 38,400 J
O -38,400 J

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