Which of the following is the working principle of transformer?

Self induction

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Reverse voltage

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Reverse current

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Mutual induction

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Solution

The correct option is D
Mutual induction

A transformer consists of two electrically isolated coils which are primary and secondary which operates on Faraday's principal of “mutual induction”, in which an emf is induced in the transformers secondary coil by the magnetic flux generated by the voltages and currents flowing in the primary coil.

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State whether the following statements are true of false :

(a) A generator works on the principle of electromagnetic induction.

(b) A motor works on the principle of electromagnetic induction.

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