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A thin wire of length L is made of an in...

A thin wire of length `L` is made of an insulating material. The wire is bent to form a circular loop, and a positive charge `q` is distributed uniformly around the circumference of the loop. The loop is then set into rotation with angular speed `omega` around an axis through its centre. If the loop is in the region where there is a uniform magnetic field `vec(B)` directed parallel to the plane of the loop, calculate the magnitude of the magnetic torque on the loop.

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