A transformer can only operate if _________.
A) the power in equals the power out
B) the potential difference is large enough
C)A.c. is used
D) we step up the voltage

Question

Quizplus · Accepted Answer

Transformers operate on the principle of electromagnetic induction, which requires an alternating current (a.c.) to induce a changing magnetic field in the core. This changing magnetic field is what enables the transfer of energy from the primary coil to the secondary coil. Direct current (d.c.) does not change direction and thus cannot create a changing magnetic field in the transformer core, making a.c. necessary for transformer operation.

A Transformer Can Only Operate If _________