A straight wire is carrying a current upward. Observed from above (i.e., looking downward towards the wire), the magnetic field lines are
A) radially outward.
B) radially inward.
C) clockwise circles.
D) counter-clockwise circles.
E) directed toward the observer.

Question

Quizplus · Accepted Answer

According to the right-hand rule, the magnetic field lines around a current-carrying wire circulate in a counter-clockwise direction when viewed from above.

A Straight Wire Is Carrying a Current Upward