An electric motor is connected to a battery. The current flows through brushes to a commutator ring, which is attached to an electromagnet turning through a permanent magnetic field.
What is the purpose of the commutator ring?
© It allows mechanical energy to be converted Into electrical energy.
• It turns the electromagnet in the opposite direction.
O it periodically reverses the current flow through the electromagnet.
• It keeps the electromagnet from losing Its magnetism.