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. FalseWhen entering the field the coil experiences a magnetic force to the left FalseWhen leaving the field the coil experiences a magnetic force to the right. True Upon entering the field, a counterclockwise current flows in the loop. FalseWhile the loop is entirely in the field, the emf in the loop is zero. Submit Answer Incorrect. Tries 2/8 Previous Tries

Explanation / Answer

When the loop is entering the field, the flux inside the loop is is increasing, so according to lenz law, EMF will be induced in counterclock wise direction. So yes the force will be in the left direction

As F= I(dl*B)

No, the second statement is false, as when the loop will leave the field a clockwise current will be induced and the force will be in left direction

Third statement will be true according to lenz law, it will oppose the change in the flux so a counter clockwise current will be induced.

Yes when the loop is entirely in field, EMF will be zero, as there is not any change in the flux.

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