Define magnetic dipole moment of a magnet and write its unit by taking into consideration the torque acting on it, when placed in magnetic field. Is it a vector or a scalar?
Torque acting on a dipole,
If, B = 1 and θ = 90°,then
M = τ
Magnetic dipole moment is numerically equal to the torque experienced by the magnet when placed perpendicular to a uniform magnetic field of unit strength.
i.e.,
So, SI unit of M is N m T-1 .
Magnetic dipole moment is a vector.
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