A condenser having a capacity 2.0 micro farad is charged to 200 volts and then the plates of the capacitor are connected to a resistance wire. The heat produced in joules will be

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4×104 J

4×1010 J

4×10−2 J

2×10−2 J

answer is C.

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Detailed Solution

U=12CV2=12×2×10−6×(200)2=4×10−2J

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