The figure below shows three situations of conducting loops in magnetic fields.
ID: 778884 • Letter: T
Question
The figure below shows three situations of conducting loops in magnetic fields. The loop is in the plane of the paper and the direction of the magnetic field is given by the direction of the arrows. The arrangements change from the initial-state (i)to the final-state (f) for each diagram. Select True or False for all statements. In diagram A, while changing from (i) to (f), a counterclockwise current is induced in the loop In diagram B, while changing from (i) to (f), a counterclockwise current is induced in the loop. In diagram C, while changing from (i) to (f), a clockwise current is induced in the loop Submit Answer Tries 0/10Explanation / Answer
Lenz' s law states that the induced current flows in a direction that opposes the change that induced the current.
and
Righ hand rules states that
Curl your fingers into a half-circle around the wire, they point in the direction of the magnetic field, B then thumb is in the direction of the conventional current.
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Diagram A:
As the area is decreasing, the flux is decreasing, so the current has to produce a magnetic field to oppose the change which would be a counter clockwise current.
Given statement is true
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b.
Initially, the flux is into the page, after that there is no change in flux finally. Implies no field. No curreemt is produced in this case.
Given statement is False
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In diagram C, no flix flow through circular area. No current is pass through them.
Given statement is False.