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Following operations can be performed on...

Following operations can be performed on a capacitor: X - connect the capacitor to a battery of `emf epsilon`. Y - disconnect the battery. Z - reconnect the battery with polarity reversed. W - insert a dielectric slab in the capacitor.

A

a) In XYZ (perform X, then Y, then Z). The stored electric energy remains unchanged and no thermal energy is developed.

B

B) The charge appearing on the capacitor is greater after the action XWY than after the action XYW.

C

C) The electric energy stored in the capacitor is greater after the action WXY than after the action XYW.

D

D) The electric field in the capacitor after the action XW is the same as that after WX.

Text Solution

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The correct Answer is:
B, C, D
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