engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Moving Charges and Magnetism The Magnetic Dipole Moment
A bar magnetic having a magnetic moment of 2.0 × 105 JT–1, is placed along the direction of uniform magnetic field of magnitude B = 14 × 10–5 T. The work done in rotating the magnet slowly through 60° from the direction of field is:
1
14 J
2
8.4 J
3
4 J
4
1.4 J