A parallel-plate capacitor of capacitance 20 µF is fully charged by a
battery of 24 V. The bat...
A parallel-plate capacitor of capacitance 20 µF is fully charged by a
battery of 24 V. The battery is then disconnected. A dielectric slab of k = 4
is slipped between the two plates of the capacitor:
(a) Find the change in the potential energy of the capacitor.
(b) Does the potential energy increase or decrease? Explain
Answers: 2
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