Torque on a magnetic dipole (current loop) of moment m placed in a uni…

Question

Torque on a magnetic dipole (current loop) of moment m placed in a uniform field B at angle θ is:

Accepted Answer

A. m B sinθ

1. τ = m × B; magnitude = m B sinθ.
2. m for a planar loop = N I A, perpendicular to the plane (right-hand rule).
3. Analogous to electric dipole in electric field.
_Source: syllabus Physics Ch 4 §4.9 Torque on a Current Loop_

Answer

m B cosθ

Answer

m B

Answer

m / B

Torque on a magnetic dipole (current loop) of moment m placed in a uniform field B at angle θ is:

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