magnetism

Question: If a bar magnet of magnetic moment M is freely suspended in a uniform magnetic field of strength B, the work done in rotating the magnet through an angle$\theta $ is

1) $MB(1 - \sin \theta )$

2) $MB\sin \theta $

3) $MB\cos \theta $

4) $MB(1 - \cos \theta )$

Solution:

Explanation: No Explanation

Magnet and It's Properties

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