Three coaxial circular wire loops and a stationary observer are positioned as shown in figure. From the observers point of veiw, a current I flows counter clockwise in the middle loop, which is moving towards the observer with a velocity v. Loops A and B are stationary. This same observer would notice that.

Options

A. Clockwise currents are induced in loops A and B
B. Counter clockwise currents are induced in loops A and B
C. A clockwise currents is induced in loop A, but a counter clockwise current is induced in loop B
D. A Counter clockwise current is induced in loop A , but a clockwise current is induced in loop B

Answer

C

Explanation

The magnetic flux in loop A shall increases while the magnetic flux in loop B shall decreases. From Lenz's law, the induced current in loop A will decreases the flux in loop A and induced current in loop B shall increases the flux in loop B. hence clockwise current is induced in loop A and couterclockwise current is induced in loop B.