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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

`13.89 H`

C

`138.88 H`

D

`0.138 H`

Text Solution

Verified by Experts

The correct Answer is:
B
Magnetic potential energy, `U=1/2Li^(2)`
`L=(2U)/(i^(2))=(2xx25xx10^(-3))/(60xx60xx10^(-6))=13.89 H`
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