The magnetic forces exerted on each other by two parallel wires with unequal currents flowing in opposite directions are
A) repulsive and unequal in magnitude.
B) attractive and unequal in magnitude.
C) repulsive and equal in magnitude.
D) attractive and equal in magnitude.

Question

Quizplus · Accepted Answer

According to Ampère's force law, two parallel wires carrying currents in opposite directions exert repulsive forces on each other. By Newton's third law, these forces are equal in magnitude and opposite in direction.

The Magnetic Forces Exerted on Each Other by Two Parallel