A 200-loop coil of cross sectional area 8.5 cm² lies in the plane of the paper. Directed out of the plane of the paper is a magnetic field of 0.06 T. The field out of the paper decreases to 0.02 T in 12 milliseconds. What is the direction of the current induced?

Question

Quizplus · Accepted Answer

The magnetic field is decreasing, so the induced current will act to oppose this decrease. According to Lenz's Law, the induced current will be in a direction that tries to maintain the original magnetic field direction, which is out of the paper. Therefore, the induced current will be counterclockwise.

A 200-Loop Coil of Cross Sectional Area 8