What type of current does a transformer typically handle?

Transformers are specifically designed to transfer electrical energy between circuits through electromagnetic induction, and they operate efficiently with alternating current (AC). The principle behind a transformer relies on the changing magnetic field that is created when AC flows through the primary coil. This alternating magnetic field induces a voltage in the secondary coil, allowing the transformation of voltage levels.

In contrast, direct current (DC) does not create a changing magnetic field; hence, transformers cannot operate with DC inputs effectively. Applying DC to a transformer can lead to core saturation and potential damage, as the steady magnetic field does not allow for the transfer of energy as intended.

Therefore, the correct understanding is that transformers are meant to handle and manipulate AC, making it the proper answer to this question.