What is the role of a commutator in a DC motor?
Correct Answer: The commutator reverses the direction of current in the coil.
- Step 1: Understand that a DC motor has a coil of wire that spins when electricity flows through it.
- Step 2: Know that the coil needs to keep spinning in the same direction for the motor to work properly.
- Step 3: Realize that as the coil turns, the direction of the current in the coil would naturally change, which could stop the spinning.
- Step 4: Learn that the commutator is a part of the motor that helps solve this problem.
- Step 5: The commutator switches the direction of the current in the coil every half turn.
- Step 6: This switching keeps the coil spinning in the same direction, allowing the motor to run continuously.
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