Consider two long, straight parallel wires, each carrying a current I. If the currents are flowing in the same direction:
A) the two wires will attract each other.
B) the two wires will repel each other.
C) neither wire will exert a force on the other.
D) the two wires will exert a torque on each other.

Question

Quizplus · Accepted Answer

According to Ampère's force law, two parallel wires carrying currents in the same direction will attract each other due to the magnetic fields they generate.

Consider Two Long, Straight Parallel Wires, Each Carrying a Current