Question

what is the role of two conducting stationary brushes in the simple electric motor.

Answer 1

The primary function of carbon brushes is to deliver or collect current from a rotating part of an electric machine. The brushes should maintain a close contact with rotating part (commutator or slip rings) in order to ensure sparkles operation without wearing itself too quickly.

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Answer 2

these are responsible for current flow because of stationaryness we are able to get both AC and DC type of currents