Questions
A magnet of magnetic moment M is situated with its axis along the direction of a magnetic field of strength B. The work done in rotating it by an angle of 180o will be
detailed solution
Correct option is D
Work done MB(cosθ1−cosθ2)θ1=0∘ and θ2=180∘⇒W=MB(cos0−cos180)=2MBTalk to our academic expert!
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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 is
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