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A 4muF capacitor is charged to 400 V. If...

A `4muF` capacitor is charged to 400 V. If its plates are joined through a resistance of `4kOmega`, then heat produced in the resistance will be

A

0.16 J

B

0.32 J

C

0.64 J

D

1.28 J

Text Solution

Verified by Experts

The correct Answer is:
B
`C=4muF,V=400V,R=4kOmega,H-?`
`H=E=1/2CV^(2)`
`=(4xx10^(-6)xx16xx10^(4))/2=0.32J`
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