Physics
Grade-10
Easy
Question
In an Electric motor ________ remains fixed and ______ rotates.
- Brushes, Commutator
- Magnets, Brushes
- Commutator, Magnets
- Commutator, Brushes
Hint:
Think about electric motor diagram
The correct answer is: Commutator, Brushes
In an electric motor, the brush remains fixed whereas the commutator rotates with the coil.
A brush or carbon brush is an electrical contact which conducts current between stationary wires and moving parts, most commonly in a rotating shaft
commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.
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