Chapter 21, Problem 5MCQ

A metal ring lies on a table. The S pole of a bar magnet moves down toward the ring from above and perpendicular to its surface. Which answer and explanation correctly predict the direction of the induced current as seen from above?

a. Clockwise because the $\stackrel{\to }{B}$ field is down and increasing

b. Clockwise because the $\stackrel{\to }{B}$ field is up and increasing

c. Counterclockwise because the $\stackrel{\to }{B}$ field is down and increasing

d. Counterclockwise because the $\stackrel{\to }{B}$ field is up and increasing.

e. There is no current, it only changes when the N pole approaches.