If the voltage produced by a generator alternates, it does so because
A) the current it produces alternates.
B) alterations in the mechanical energy input.
C) in effect it is an ac motor in reverse.
D) the changing magnetic field that produces it alternates.
E) unlike a battery, it produces alternating current.

Question

Quizplus · Accepted Answer

The changing magnetic field within a generator is what causes the voltage it produces to alternate. This is a fundamental principle of electromagnetic induction, where a changing magnetic field in a circuit induces a current, and in the case of generators, this process results in alternating current (AC) when the magnetic field alternates.

If the Voltage Produced by a Generator Alternates, It Does