The operation of an electric motor depends on which of the following effects?
A)the Doppler effect
B)the photoelectric effect
C)the force acting on a current-carrying wire in a magnetic field
D)current from the motion of a wire in a magnetic field

Question

Quizplus · Accepted Answer

The operation of an electric motor depends on the force acting on a current-carrying wire in a magnetic field. When an electric current flows through a wire placed in a magnetic field, a magnetic force is exerted on the wire. The direction of the force is perpendicular to both the direction of the current and the direction of the magnetic field. This force causes the wire to move, and if the wire is coiled around a shaft, it will rotate, thus creating rotational motion in an electric motor. The other choices (A, B, and D) are not relevant to the operation of an electric motor.

The Operation of an Electric Motor Depends on Which of the Following