Three closed similar coils P, Q and R are placed such that their planes are parallel. In the coil P and R, current of same magnitude flows as shown in the figure. Coils Q and R are static while coil P is moved with a uniform speed towards Q, then

Options

A. Clockwise current will be induced in coil Q, as seen by eye
B. Anti clockwise current will be induced in coil Q, as seen by eye
C. No current will flow in coil Q
D. Current induced in coil Q will be equal to R, but in opposite direction, hence net current in Q will be zero.

Explanation

Coil P is moved with a uniform speed towards Q while R is static. Due to the current in P, magnetic field is from right to left. When P is moved towards Q, magnetic lines passing through Q (from right to left) will increase, i.e., magnetic flux passing through Q will increase. Therefore, current will be induced in Q. The induced current will have such a direction that it gives a magnetic field opposite to that passing through Q due to current in P. Thus, anticlockwise current will be induced in coil Q, opposite to the direction of current in coil P.