Answer to Question #294641 in Electricity and Magnetism for Ndam

Question

Loop A has a current moving in the counterclockwise direction, viewed from above.

1. If the current in loop A decrease with time, what is the direction of the induced current in loop B? Will the two loop attrack or repel each other.

Answer 1

Decreasing the current in loop A induces a counterclockwise current in loop B. This implies that in loops A and B there will be parallel currents. Since parallel currents attracts, then the two loops will atract each other.