NEET Physics Bar Magnet Match the Following Question
Match Column-I with Column-II.
Column-I Column-II (a) Torque on a bar magnet (i) m × B (b) Potential energy in a magnetic field (ii) –m . B (c) Force on a bar magnet (iii) Zero (d) Magnetic field due to a bar magnet (iv) 0 3 2r μ = π m
Choose the correct matching:
a-i, b-ii, c-iii, d-iv
a-ii, b-iii, c-i, d-iv
a-iii, b-iv, c-ii, d-i
a-iv, b-i, c-ii, d-iii
Correct Answer
Detailed Explanation
The torque on a bar magnet is given by m × B, the potential energy is –m . B, the force on it is zero when in a uniform magnetic field, and the magnetic field due to a bar magnet at a distance r is given by 0 3 2r μ = π m.
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