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.


True False: When leaving the field the coil experiences a magnetic force to the left.
True False: Upon entering the field, a clockwise current flows in the loop.
True False: When entering the field the coil experiences a magnetic force to the left.
True False: Upon leaving the field, a clockwise current flows in the loop.

Explanation / Answer

1.True:when it leaves the field,acc to lenz law it tries to increase the field so the current in the loop is anticlock direction.so the force will act only on the left most side of the loop and it will be towards left. 2.true:when it enters,the field increases so it tries to reduce the field with in the loop and hence current is clockwise 3.true:as the current is clockwise and only right most side will be in the field so it experience the force towards left. 4.false:after leaving the loop there will be no field change nd hence no current.

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