Torque on Magnetic Dipole

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$$ \vec{\tau} = \vec{m} \times \vec{B} $$
Magnitude: $$\tau = mB \sin\theta$$. Torque aligns dipole with magnetic field $$\vec{B}$$; $$\theta$$ is angle between $$\vec{m}$$ and $$\vec{B}$$.
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