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 P and R, but in opposite direction, hence net current in Q will be zero.
Correct Answer: B
Solution :
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.
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