Physics for IGCSE & O level - Magnets And Currents (Section 8 - No. 46)
What is the function of a commutator in an electric motor?
To reverse the current's direction.
To increase the current.
To decrease the motor's speed.
To provide electricity to the coil.
Explication
The commutator reverses the current direction in the coil every half-cycle to keep the motor spinning.