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

ID: 1581423 • Letter: A

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 FalseUpon leaving the field, a counterclockwise current flows in the loop TrueWhen entering the field the coil experiences a magnetic force to the right TrueUpon entering the field, a clockwise current flows in the loop FalseWhen leaving the field the coil experiences a magnetic force to the left Submit Answer Incorrect. Tries 3/8 Previous Tries

Explanation / Answer

Current in the loop and force on the loop are there, only while entering or leaving the loop.
When loop is completely in the field or completely leaves it, there is no current or force.
Current while entering the loop is anticlockwise and while leaving the loop is clockwise.
Force in both the cases is to right.
Hence only second statement is correct.

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