What is transformer?

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Accepted Answer

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.
They consist of two coils of wire, called the primary and secondary, wrapped around a magnetic core.
When an AC current flows through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.
Transformers are commonly used in power distribution systems, electrical appliances, and electronic devices.
Examples of transformers include step-up transformers, step-down transformers, isolation transformers, and autotransformers.

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