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

Question

Quizplus · Accepted Answer

When currents flow in opposite directions in two parallel wires, a magnetic field is created around each wire. These magnetic fields interact with each other and produce a force that causes the wires to repel each other. This is known as the "right-hand rule" of electromagnetism. Therefore, the correct choice is B - the two wires will repel each other.

Consider Two Long,straight Parallel Wires,each Carrying a Current I