Two identical coils of wire are placed on a single horizontal wooden broom handle. The coils are separated by a few centimeters. We now run identical currents in the same direction through each coil. The coils experience
A) no forces because the currents are identical.
B) a repulsive magnetic force.
C) an attractive magnetic force.
D) an attractive electrostatic force because one coil is negatively charged and the other positively charged.
E) a repulsive electrostatic force because both coils are identically charged.

Question

Quizplus · Accepted Answer

When identical currents flow in the same direction through two coils, they create magnetic fields that interact in such a way as to produce an attractive force between the coils. This is due to the principle that parallel currents attract.

Two Identical Coils of Wire Are Placed on a Single