Which of the following concerning a d.c. motor is correct?

(1) It converts electrical energy to mechanical energy.
(2) The commutator rotates together with the coil in the magnetic field.

(1) only

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(2) only

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(1) and (2) both

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Both are incorrect

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Solution

The correct option is A
(1) only

A d.c. motor has split rings (commutator) which do not rotate together with the coil.

A d.c. motor coverts electrical energy into mechanical energy.

Thus, only the first statement is correct.

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