STANDARDPhysics-Electromagnetism
STANDARD Physics Energy in Magnetic Fields MCQ Question
Type: MCQ-numerical-Easy-Class 12
A 100 mH coil carries a current of 1 A. Energy stored in its magnetic field is
A
0.5 J
B
0.05 J
C
1 J
D
0.1 J
Correct Answer
Option B
Detailed Explanation
The energy stored in an inductor is given by U = 1/2 L I². Substituting L = 100 mH and I = 1 A, we get U = 0.05 J.
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