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The potential difference between the pla...

The potential difference between the plates of a parallel plate condenser having a capacity of `10muF`, is increased from 5 V to 25 V. the increase in its energy is

A

`3xx10^(-3)J`

B

`4xx10^(-3)J`

C

`5xx10^(-3)J`

D

`2xx10^(-3)J`

Text Solution

Verified by Experts

The correct Answer is:
A
Increase in energy `=(1)/(2)C[V_(2)^(2)-V_(1)^(2)]`
`=(1)/(2)xx10^(-6)xx10[625-25]`
`=3000xx10^(-6)=3xx10^(-3)J`
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