State what would happen to the direction of rotation of a motor if:
The magnetic field was reversed

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Will appear in sinusoidal form

Will remain unchanged

Will get reverse

Will be parallel

answer is C.

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Detailed Solution

The direction of rotation would be reversed if the magnetic field is reversed.

A DC generator is an electrical machine whose main function is to convert mechanical energy into electricity. In a DC generator, we have a commutator which is a rotary electrical switch that periodically reverses the direction of the current between the rotor and the external circuit.
If we reverse the electric current's direction, the magnetic field's direction will also be reversed.
The compass needle will move in another direction if the current's direction is reversed because the magnetic field's polarity has changed.

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