NEET2023Physics-Electromagnetism

NEET 2023 Physics Inductance MCQ Question

Type: MCQ-numerical-Medium-Class 12

The magnetic energy stored in an inductor of inductance 4 μH carrying a current of 2 A is:

A

4 mJ

B

8 mJ

C

8 μJ

D

4 μJ

Correct Answer

Option C

Detailed Explanation

The energy stored in an inductor is given by the formula E = rac{1}{2} L I^2. Substituting L=4imes106HL = 4 imes 10^{-6} \, H and I=2AI = 2 \, A, we get E = rac{1}{2} imes 4 imes 10^{-6} imes 4 = 8 imes 10^{-6} \, J = 8 \, \mu J.

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