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Can we a transformer be used to step up ...

Can we a transformer be used to step up or step down a D.C. voltage? Explain.

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State the principle of working of a transformer. Can a transformer be used to step up or step down a d.c. voltage? Justify your answer.

Assertion : An ideal transformer does not vary the power. Reason : An transformer is used to step-up or step-down ac voltages.

Assertion : An ideal transformer does not vary the power. Reason : An transformer is used to step-up or step-down ac voltages.

A step up transformer is used to

A step up transformer is used to

Why transformer cannot be used the step up D.C. voltage?

Why cannot a transformer be used to step up d.c. voltage ?