What physical phenomenon is the operation of an alternator based on?

Answer: on the phenomenon of electromagnetic induction.
The alternator is the most common source of electrical energy. It converts the energy of movement, mechanical, into electrical, current energy.
Its work is based on the phenomenon of electromagnetic induction: a conductive circuit rotating in a magnetic field generates a variable electromotive force (EMF) of induction. The main components of the generator: rotor, stator and slip rings. The rotor rotates and creates an induction EMF in the stator.

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