The work done in placing a charge of 8xx...

The work done in placing a charge of `8xx10^-18` coulomb on a condenser of capacity 100 micro-farad is

A

`16xx10^(-32)` joule

B

`3.1xx10^(-26)` joule

C

`4xx10^(-10)` joule

D

`32xx10^(-32)` joule

Text Solution

Verified by Experts

The correct Answer is:

D

The work done is stored as the potetial energy. The potential energy stored in a capacitor is given by
`U=1/2 (Q^(2))/C=1/2xx((8xx10^(-18))^(2))/(100xx10^(-6))=32xx10^(-32)J`

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