Answer to Question #294532 in Electricity and Magnetism for Nurulkhair

Question

Two circular loops A and B have their planes parallel to each other. Loop A has a current moving in the counterclockwise direction when viewed from above.

a. If the current in loop A decreases with time, what is the direction of the current in loop B? will the two loops attract or repel each other?

b. If the current in Loop A increases with time, what will be the direction of the current in Loop B? Will the two loops attract or repel each other?

Answer 1

Two circular loops A and B have their planes parallel to each other. Loop A has a current moving in the counterclockwise direction when viewed from above

(1) If the current in loop A decreases with time

Current decreases

Current flow opposite direction

Both are repel each other

(2)

the current in Loop A increases with time

Both circuit current flow same direction

Both current attract each other