A bar magnet that has been released with the south pole down passes through a circular loop. Looking from top to bottom, what is the direction of the current induced in the spike by the movement of the magnet: a) before the magnet penetrates the loop; b) after having passed all the way through the loop.

A bar magnet that has been released with the south pole down passes through a circular loop. Looking from top to bottom, what is the direction of the current induced in the spike by the movement of the magnet: a) before the magnet penetrates the loop; b) after having passed all the way through the loop.