A long straight wire lies on a horizontal table and carries an ever-increasing current toward the north. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from
Above, the direction of the induced current in these coils is
A) clockwise in both coils.
B) counterclockwise in the east coil and clockwise in the west coil.
C) counterclockwise in both coils.
D) clockwise in the east coil and counterclockwise in the west coil.

Question

Quizplus · Accepted Answer

As the current in the wire increases, the magnetic field around it also increases. By Lenz's Law, the induced current in the east coil will be counterclockwise to oppose the increase in magnetic field, and in the west coil, it will be clockwise for the same reason.

A Long Straight Wire Lies on a Horizontal Table and Carries