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Q.

A condenser of capacity 50 μF is charged to 10 volts. Its energy is equal to

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a

2.5 X 10-3 J

b

2.5 x 10-4 J

c

5 X 10-2 J

d

1.2 x 10-8 J

answer is A.

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Detailed Solution

U=12CV2=12×50×10-6×(10)2=2.5×10-3 J
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