| There are two coils A and B as shown in figure. A current starts flowing in B as shown, when A is moved towards B and stops when A stops moving. The current in A is counter clockwise. B is kept stationary when A moves. We can infer that |
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A) there is a constant current in the clockwise direction in A.
B) there is a varying current in A.
C) there is no current in A.
D) there is a constant current in the counter clockwise direction in A.
Correct Answer: D
Solution :
Option [d] is correct Explanation: When coil A moves towards coil B with constant velocity, so rate of change of magnetic flux due to coil B in coil A will be constant that gives constant current in coil A in same direction as in coil B by Lenz's law.
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