Question

Name the principle on which a transformer works. Can a transformer work when connected to a D.C. source?

• A. Mutual Induction, Yes as transformer works on DC and AC
• B. Mechanical effect of Electric current, No as transformer works only on AC
• C. Mechanical effect of Electric current, Yes as transformer works on DC and AC
• D. Mutual Induction, No as transformer works only on AC

Answer 1

The correct option is D

Mutual Induction, No as transformer works only on AC

A transformer works on the principle of Electromagnetic Induction between 2 coils which is called Mutual Induction. For mutual induction an AC is required in the primary coil and not DC. Hence a transformer only works on DC and not AC.