Two insulated rings, one of a slighlty smaller diameter than the other are suspended along their common diameter as shown. Initially the planes of the rings are mutually perpendicular. When a steady current is set up each of them

Options

A. The two rings rotate into a common plane
B. The inner ring oscillates about its initial position
C. The inner ring stays stationary while the outer one moves into the plane of the inner ring.
D. The outer ring stays stationary while the inner one moves into the plane of the outer ring.

Answer

A

Explanation

Ring will experience the torque.