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Electric Motor

State the fun...

Question

State the function of split ring in d.c. motor.

A

It converges all magnetic lines at the centre of the coil to make a strong magnetic field.

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B

It diverges all the magnetic lines at the centre of the coil to make a strong magnetic field.

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C

It increases speed of the charge particle

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D

It decreases the speed of the particle

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Solution

The correct option is A It converges all magnetic lines at the centre of the coil to make a strong magnetic field.
The split ring in the electric motor also known as a commutator reverses the direction of current flowing through the coil after every half rotation of the coil. Due to this the coil continues to rotate in the same direction.

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