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Answer When the flexible wire of irregular shape, ABED, turns into a circular shape and is placed in a region with a magnetic field directed normal to the plane of the loop and away from the reader, the magnetic flux through the loop changes. According to Faraday's law of electromagnetic induction, this change in magnetic flux induces an electromotive force (emf) and consequently an induced current in the loop.
To determine the direction of the induced current in the wire loop, we can use Lenz's law.
Lenz's law states that the direction of the induced current is such that it opposes the change in magnetic flux that produced it.
In this case, as the wire loop is placed in the magnetic field directed away from the reader, the magnetic flux through the loop increases. To oppose this increase in magnetic flux, the induced current will flow in such a direction as to create a magnetic field opposing the external magnetic field.
Using the right-hand rule for the direction of induced current, if we imagine the magnetic field lines pointing away from us (as mentioned in the question), the induced current will flow in such a way that it generates a magnetic field opposing the external magnetic field.
Therefore, the induced current in the wire loop will flow counterclockwise when viewed from the top. This counterclockwise current flow will generate a magnetic field into the plane of the loop, opposing the increase in magnetic flux caused by placing the loop in the external magnetic field.
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