What is the purpose of brushes and the commutator in a d.c. motor?
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Explanation:
Commutator and Brushes on DC Motor. To keep the torque on a DC motor from reversing every time the coil moves through the plane perpendicular to the magnetic field, a split-ring device called a commutator is used to reverse the current at that point.
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The commutator half rings makes tge current to flow in the same direction after half revolution . Due to which the force on the conductor will remain in particular direction .
The carbon brushes is to carry current and to switch the current to tge proper winding of the armature as it rotates . This creates correct magnetic field essentially craeting a contact between switch and split rings .
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