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A parallel plate air capacitor of capaci...

A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant k, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?

A

the potential difference between the plates decreases k times

B

the energy stored in the capacitor decreases k times

C

the change in energy stored is `(1)/(2)CV^2((1)/(k)-1)`

D

the charge on the capacitor is not conserved

Text Solution

Verified by Experts

The correct Answer is:
D
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