Physics, asked by sbapvz, 6 months ago

a magnet of magnetic moment 4Am2 is held in a uniform magnetic field 5x10^-4 with the magnetic moment vector makes an angle 30 degree

Answers

Answered by drishtisingh156

8

Torque acting on a magnetic dipole of moment M kept in uniform magnetic field=MBsinθ

Therefore work done in rotating a magnet of moment M by an angle θ=MB(1−cosθ)=MB(1−(−1))=2MB

=2×4×5×10 ^−5=4×10 −4 J

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