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

Options

A. remain stationary
B. is attraced by the loop-A
C. is repelled by the loop-A
D. rotates about its CM, with CM fixed

Answer

C

Explanation

When the current in the loop. A increases, the magnetic lines of force in loop B also increases as loop A is palced near loop B. This induceds an emf in B in such a direction that current flows opposite in B (as compared to A)`.
Since currents are in a opposite direction, the loop B is repelled by loop A .
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