Question

square loop of wire with a sma 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 freeregion to the right. The self inductance of the loop is negligible Fa'se Upon entering the field, a clockwise current flows in the loop. Pase?when leaving the field the coil experiences a magnetic force to the right. Ase?when entering the field the coil experiences a magnetic force to the right Fee?Upon leaving the field, a clockwise current flows in the loop Suoi Anser You have entered that answer before Incorrect. Tries 7/99 Previous Tries

Answer 1

1) TRUE

The induced current should be such that it opposes the cause producing it. The induction is due to increasing B.

The original B is out of the page. So for reducing it the induced current should be such that it produces a field that goes into the page.

For that the current should be clockwise, according to right hand curl rule.

2) FALSE

3) False.

4) False

The current must be ccw, similar explanation as part 1.