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A current-carrying wire is placed below a coil in its plane, with current flowing as shown. If the current increases

Option: 1

no current will be induced in the coil
 


Option: 2

an anticlockwise current will be induced in the coil
 


Option: 3

a clockwise current will be induced in the coil
 


Option: 4

the current induced in the coil will be first anticlockwise and then clockwise


Answers (1)

best_answer

The magnetic flux through the coil, due to the current I flowing in the wire will be coming out of the plane of paper (or plane of the coil) When the current I through the wire increases, the magnetic flux produced by it also increases. Therefore, according to Lenz’s law, the induced current in the coil will be such a direction so as to oppose this increase in magnetic flux. That is, the induced current in coil should produce a magnetic flux directed into the paper. Applying right-hand rule, we find that the direction of induced current in the coil must be clockwise.
 

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Shailly goel

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