A coil lies flat on a level tabletop in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of
The induced current in this coil as the field increases?
A) clockwise
B) clockwise initially, then counterclockwise before stopping
C) counterclockwise
D) There is no induced current in this coil.

Question

Quizplus · Accepted Answer

According to Lenz's Law, the induced current will flow in a direction that opposes the change in magnetic flux. Since the magnetic field is increasing upwards, the induced current will flow clockwise to create a magnetic field opposing the increase.

A Coil Lies Flat on a Level Tabletop in a Region