I understand that if the wire is not aligned with the magnetic field, it won't rotate, but I'm still confused on how so. Also, which direction is the current flowing?
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The current loop will have a magnetic moment $\vec{\mu}$, the direction of which you can get using the right hand rule. It will be orthogonal to the plane of the loop. The torque on the loop will be proportional to $\vec{B}\times \vec{\mu}$, which will vanish if $\vec{\mu}$ is either parallel or anti-parallel with $\vec{B}$, however only one of these configurations will be stable. In the stable configuration, $\vec{\mu}$ will be in the same direction as $\vec{B}$, and if you look at the Lorentz force on any segment of the wire it will be directed outward. |
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