Question

A bar magnet of magnetic moment M is gently
placed inside the two mutually perpendicular
magnetic field Bv = 6T and Bh = 2T as shown in
figure. The net torque on the bar magnet will be
zero

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Answer 1

Answer:

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Answer 2

The net torque on the bar magnet will be zero when it makes an angle theta = tan inverse(1/3) with the vertical field.

The work required to rotate a magnet with a magnetic moment M at an angle of 90' from the external magnetic field direction is 'n' times that required to turn it through at a 60° angle.