Question

In an electric motor, a commutator

a. is made out of dozens of wire loops wrapped around a ferromagnetic core.
b. repeatedly reverses the flow of current through the armature.
is a magnet.
d. is directly connected to the current source.

Answer 1

b on edg 2020

Step-by-step explanation:

Answer 2

b. Repeatedly reverses the flow of current through the armature.

Step-by-step explanation:

1. The electric motor is a device that converts the electrical energy into mechanical energy.
2. The commutator is a device that repeatedly reverses the flow of current through the armature.
3. It is a split ring that acts as the commutator.
4. It connects the external circuit through a carbon brush and the armature of the motor.
5. Another important component of an electric motor is an electromagnet or permanent magnet.