Question

An aluminum ring hangs vertically from a thread with its axis pointing East-West and is free to swing about point O, as shown in the diagram below. thread R common 0 E WE axis coil ring A coil is fixed near the ring and coaxial with it. With the switch closed, the rheostat R is adjusted to increase the current in the circuit to a maximum before decreasing it again. What will the motion of the aluminum ring be during this time? a) Swing in the direction of E and remains there. b) Swing in the direction of W and remains there. c) Swing in the direction of E then in the direction of W. ESwing in the direction of W then in the direction of E

I need full explanation please.

Answer 1

The induced current and motion of loop

Accordeng to Lem2 daw, inducac cument Shovld ofp0Hl TO. Sova ce curatnt Hence fncrtaia in the l fux inctaled indwlo opp0nte (Abiclose aure) Cuent so that tauli Japel the doDp il So move inEast ( ano direchen hond the otha th induced dacease Hux docataaing cunnt Soppoxte to urent ر2عى in CorlSo Claernt itmove Clor ei ano west (w dliscchion) option