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The capacity of a parallel plate air cap...

The capacity of a parallel plate air capacitor is `10muF` and it is given a charge of `40muC`. The electrical energy stored in the capacitor is

A

400 erg

B

600 erg

C

800 erg

D

900 erg

Text Solution

Verified by Experts

The correct Answer is:
C
`E=Q^(2)/(2C)=((40xx10^(-6))^(2))/(2xx10xx10^(-6))`
`=80xx10^(-6)J`
= 800 erg.
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