Question

Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response the loop B(a) remains stationary(b) is attracted by loop A(c) is repelled by loop A(d) rotates about is CM with CM fixed

Answer 1

Answer:

(c) is repelled by loop A

Explanation:

According to Lenz's law,  when current in loop A increases, it also increases the field lines as result  it increases the flux, thus more flux is linked with the loop B. Loop B will now  oppose any increase in the flux through it, hence it moves away from A in  order to decrease the number of field lines i.e. flux passing through it . Therefore, loop B will be repelled by loop A.