Question

In most small electric motors, the magnets that are around the central rotor (the field magnets) are _________________. The magnet in the center is a(n) ____________________.

A) horseshoe magnets, bar magnet
B) bar magnets, horseshoe magnet
C) electromagnets, permanent magnet
D) permanent magnets, electromagnet

Answer 1

the answer is D

Step-by-step explanation:

In most small motors, the field magnet is usually a permanent magnet (the field magnet could be an electromagnet as well, but in most small motors it isn't in order to save power). The rotor (or armature) is an electromagnet. The pole of the central magnet can be changed to continue its motion when pushed and pulled by the outer permanent magnet.

Answer 2

So we want to know what kind of magnets do we have in the electric motor. So the central rotor is usually the electromagnet and the field magnet is usually the permanent magnet. This is characteristic for most small electric motors. So the correct answer would be D) permanent magnets, electromagnet.