A square loop of wire with a small resistance is moved with constant speed from

Question

A square loop of wire with a small resistance is moved with constant speed from a field free region into a region of uniform B field (B is constant in time) and then back into a field free region to the right. The self inductance of the loop is negligible. The field is going out and is enetring from the right.

When leaving the field the coil experiences a magnetic force to the right.
Upon entering the field, a clockwise current flows in the loop.
Upon leaving the field, a counterclockwise current flows in the loop.
When entering the field the coil experiences a magnetic force to the right.

Explanation / Answer

a)

here

True , the coil is moving to right. Therefore the magnetic force will be to the left.

b)

False.
When the loop is entering the field, then magnetic flux through it increases. Therefore induced magnetic field will try to decrease the magnetic flux i.e. the inducued magnetic field will be opposite to the applied magnetic field. The applied magnetic field is into the plane of figure. Therefore the induced magnetic field is out of the plane of figure. For that the current should be counterclockwise.

c)

False

d)

False
The coil is moving to right. Therefore the magnetic force will be to the left

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