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The magnetic potential energy stored in a certain inductor is $25 m J$ , when the current in the inductor is $60 m A$ . This inductor is of inductance

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0.138 H

138.88 H

1.389 H

13.89 H

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detailed solution

Correct option is D

Magnetic potential energy stored in an inductor is given byU=12Li2⇒25×10-3=12×L×60×10-32L=25×2×106×10-33600=50036=13.89H

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