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The magnetic potential energy stored in ...

The magnetic potential energy stored in a certain inductor is `25mJ`, when the current in the inductor is `60 mA`. This inductor is of inductance

A

1.389 H

B

138.88 H

C

0.138 H

D

13.89 H

Text Solution

Verified by Experts

The correct Answer is:
D
Energy stored in inductor
`U=(1)/(2)LI^(2)`
`25xx10^(-3)=(1)/(2)xxLxx(60xx10^(-3))^(2)`
`L=(25xx2xx10^(6)xx10^(-3))/(3600)`
`=(500)/(36)`
`=13.89 H`
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