NEETPhysics-Magnetism
NEET Physics Magnetic Potential Energy MCQ Question
Type: MCQ-conceptual-Medium
The work done in rotating a bar magnet of magnetic moment M from its unstable equilibrium position to its stable equilibrium position in a uniform magnetic field B is
A
MB
B
2 MB
C
−MB
D
−2MB
Correct Answer
Option C
Detailed Explanation
The work done is given by the change in potential energy, which is −MB for a¹⁸⁰⁻degree rotation from unstable to stable equilibrium.
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