• # question_answer An aluminum ring hangs vertically from a thread with its axis pointing east-west. A coil is fixed near to the ring and coaxial with its :- What is the initial motion of the aluminum ring when the current in the coil is switched on? A)  Remains at rest   B)  Moves towards SC)  Moves towards WD)  Moves towards E

Here $(\phi \uparrow \alpha B\uparrow aI\uparrow )$ so Repulsion is there.