A condenser is charged to a potential difference of 200 volts as a result of which it gains charge of 0.1 coulomb. When it is charged then the energy released will be :
1 J
20 J
2 J
10 J
A
2 J
B
1 J
C
10 J
D
20 J
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Solution
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The expression of energy released is U=12CV2 as Q=CV thus, U=12CV.V=12QV=12×0.1×200=10J
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