A circular coil lies flat on a horizontal surface. A bar magnet is held fixed above the center of the coil with its north pole pointing downward. What is the direction of the induced current in the coil,
As viewed from above?
A) counterclockwise
B) clockwise
C) There is no current in the coil.

Question

Quizplus · Accepted Answer

There is no induced current in the coil because the magnetic field from the bar magnet is static and not changing, and there is no relative motion between the magnet and the coil. According to Faraday's law of electromagnetic induction, a change in magnetic flux is required to induce an electromotive force (and hence current) in the coil.

A Circular Coil Lies Flat on a Horizontal Surface