Two condensers of capacity C and 2C are connected in parallel and these are charged upto V volt. If the battery is removed and dielectric medium of constant K is put between the plates of first condenser, then the potential at each condenser is

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Vk+2

2+k3V

2Vk+2

3Vk+2

answer is D.

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Detailed Solution

Q= constant ,CV+2CV=KCV′+2CV′

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