The energy stored in an inductor of inductance 5mH when a current of 6A flows through it is?

By: |Published on: Nov 13|Categories: Physics JAMB| 0 comments

A. 9.0 x 10-3J
B. 9.0 x 10-2J
C. 1.4 x 10-2J
D. 1.8 x 10-3J

Correct Answer:

Option B – 9.0 x 10-2J

Explanation

Energy stored in a coil of inductance, L, and carry a current, I is given by
Energy stored in a coil of inductance, L, and carry a current, I is given by
E = 1/2 L I2
= 1/2 x 5 x 10-3 x 6 x 6
= 9.0 x 10-2J

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