The functioning of an electric motor depends on the fact that
A) like charges attract, unlike charges repel.
B) like magnetic poles attract, unlike magnetic poles repel.
C) an electrical current produces a magnetic field.
D) permanent magnets are always stronger than electromagnets.
E) all motors must have several electromagnets.

Question

Quizplus · Accepted Answer

An electric motor works because of the interaction between a magnetic field and an electrical current. The flow of current in a wire produces a magnetic field around it. By placing this wire in a magnetic field created by a permanent magnet or an electromagnet, the wire experiences a force that causes it to move. This movement can be used to drive mechanical systems, such as a fan or a car engine. Therefore, an electric current produces a magnetic field, which is the basis for the functioning of an electric motor.

The Functioning of an Electric Motor Depends on the Fact