The figure below shows three situations of conducting loops in magnetic fields.
ID: 1444299 • 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 clockwise 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.Explanation / Answer
A)
magnetic field is coming out and it increases as Area increases
So induced current will be such that it will try to decrease this magnetic field
so,
magnetic field due to induced current will be going into the plane
Hence induced current should be clockwise
Answer : True
B)
magnetic field is going in and it decreases as loop is moved outside
So induced current will be such that it will try to increase this magnetic field
so,
magnetic field due to induced current will be going into the plane
Hence induced current should be clockwise
Answer : False
C)
Here there is no change in magnetic flux
so induced current will be 0
Answer: False