A magnetic dipole is placed in a uniform magnetic field of intensity B , oriented along the direction of the field. If the magnetic dipole moment is M , then the maximum work an external agent can perform in rotating the dipole will be

Question

A magnetic dipole is placed in a uniform magnetic field of intensity B , oriented along the direction of the field. If the magnetic dipole moment is M , then the maximum work an external agent can perform in rotating the dipole will be, 1 2 M B, 4 M B, 2 M B, M B

MARKS App · Accepted Answer

The maximum work done by an external agent is W = U 180 ° - U 0 ° W = M B - - M B W = 2 M B

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