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Q.

A condenser of capacity 10 µF is charged to a potential of 500 V. Its terminals are then connected to those of an uncharged condenser of capacity 40 µF. The loss of energy in connecting them together is

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a

1J

b

2.5J

c

10J

d

12 J

answer is A.

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ΔE=12C1C2C1+C2V1−V22
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