The work done in placing a charge of 8×10−18 coulomb on a condenser of capacity 100 micro-farad is:
3.2×10−26 joule
16×10−32 joule
4×10−10 joule
32×10−32 joule
A
16×10−32 joule
B
3.2×10−26 joule
C
4×10−10 joule
D
32×10−32 joule
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Solution
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Here the work done = energy stored in capacitor =Q22C or, W=(8×10−18)22×100×10−6=32×10−32J
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