A vertical wire carries a current vertically downward. To the east of this wire, the magnetic field points
A) down.
B) north.
C) east.
D) south.

Question

Quizplus · Accepted Answer

Using the right-hand rule for a current-carrying wire, if the current is flowing downward, the magnetic field will circle the wire in a counterclockwise direction when viewed from above. To the east of the wire, this means the magnetic field points south.

A Vertical Wire Carries a Current Vertically Downward