A magnetic dipole is placed in a uniform magnetic fields, B, the potential energy is minimum when dipole is
Parallel to B
Perpendicular to B
Inclined at an angle of 45∘ to B
Anti-parallel to B
A
Inclined at an angle of 45∘ to B
B
Parallel to B
C
Perpendicular to B
D
Anti-parallel to B
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Solution
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The correct option is A Parallel to B Potential energy is given by U=M.B=−MBcosθ Thus, potential energy is minimum when dipole is parallel to B.
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