A transformer works when we apply:
Correct answer: A. A.C. voltage
- A. A.C. voltage
- B. D.C voltage
- C. A.C. as well as D.C
- D. Neither A.C. nor D.C
Explanation
Transformers work specifically with alternating current (AC). The basic principle of a transformer involves electromagnetic induction, which occurs when a varying current (AC) flows through the primary coil, inducing a changing magnetic field. This changing magnetic field then induces a voltage in the secondary coil through electromagnetic induction. Direct current (DC) doesn't cause the required changing magnetic field necessary for the operation of a transformer. Therefore, transformers are not functional with direct current as they rely on the changing magnetic fields generated by alternating current to induce a voltage in the secondary coil.
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