Question

a produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet. electromagnet electric motor circuit generator

Explanation:

The description is about a device that produces electric current via electromagnetic induction (coil rotated near magnet). A generator works on this principle (converts mechanical energy to electrical energy). An electromagnet is about magnetic field from current, an electric motor converts electrical to mechanical, and a circuit is a path for current, not the device producing current here.

Answer:

generator