Assertion A Transformer is useful for stepping up or stepping down voltages Reason R Transformer is ...........

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Assertion(A): Transformer is useful for stepping up or stepping down voltages.

Reason(R): Transformer is a device used in D.C. circuits.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

R is true but A is false.

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Explanation:

A transformer is a device that is used to either raise or lower voltages and currents in an electrical circuit. In modern electrical distribution systems,transformers are used to boost voltage levels so as to decrease line losses during transmission.