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 left. The self inductance of the loop is negligible. True While the loop is entirely in the field, the emf in the loop is zero. False When entering the field the coil experiences a magnetic force to the left. False When leaving the field the coil experiences a magnetic force to the right. True Upon entering the field, a clockwise current flows in the loop.

Answer 1

Answer:

False, True, False, True

Explanation:

Given a square loop of a wire having a small resistance and moving with a constant sped from the free region to a region having a region having a uniform field B.  It is then moved back to the left in the free field region.

For the following statements :

While the loop is entirely in the field, the emf in the loop is zero.  -- TRUE

The emf of the coil is zero when the coil moves into the field from a free region field to a uniform field region field.

When entering the field the coil experiences a magnetic force to the left   ---- FALSE

According to the Lenz law, a loop entering the field opposes it and moves towards the right.

When leaving the field the coil experiences a magnetic force to the right. --- TRUE

Upon entering the field, a clockwise current flows in the loop.  ---- TRUE

In the field the coil or the loop tries to oppose the magnetic field and forces the current in the loop to move in a clockwise direction.