APFIVE Work Done by Magnetic Torque
A magnetic dipole with moment μ = 3.0 × 10^-2 A·m² makes an angle of 60° with a uniform magnetic field of 0.25 T. If the dipole is free to rotate, what is the work done by the magnetic torque as the dipole rotates to its equilibrium position?
A
7.5 × 10^-3 J
B
0 J
C
3.75 × 10^-3 J
D
-3.75 × 10^-3 J
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