The magnetic force on a circular loop of wire of radius r carrying current I around it is zero N.

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Quizplus · Accepted Answer

The magnetic force on a circular loop of wire carrying current around it is not zero, it is given by F = IlB, where I is the current, l is the length of the wire and B is the magnetic field. However, if the magnetic field is uniform and perpendicular to the plane of the loop, then the magnetic force on the loop is zero. This is because the forces on the different segments of the wire cancel out due to symmetry, resulting in a net force of zero.

The Magnetic Force on a Circular Loop of Wire of Radius