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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 of the capacitor, is now inserted in it. Which of the following is incorrect?

A

Charge on plates becomes `KC_0 V`

B

The energy stored in the capacitor becomes K times

C

The change in energy `1/2C_0 V^2 (k-1)`

D

The change in energy ` 1/2 C_0 V^2 (1 //K-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
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