Q.

A capacitor C1 is charged to a potential difference V. The charging battery is then removed and the capacitor is connected to an uncharged capacitor C2. The potential difference across the combination is

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a

V1+C1C2

b

V1+C2C1

c

VC1C1+C2

d

VC2C1+C2

answer is A.

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Detailed Solution

Charge Q=C1V

Total capacity of combination (parallel) 

C=C1+C2 P. D. =QC=C1VC1+C2

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