Q: Alternative current is produced when a magnet or coil does what?


Read this paragraph and choose the correct option from the provided answers:

The current produced by electromagnetic induction is greater when the magnet or coil moves faster, the coil has more turns, or the magnet is stronger. If the magnet or coil is moved back and forth repeatedly, alternating current is produced.

 Choices:

- moves in circles at faster rates

- moves at faster velocities

- moves up and down repeatedly

- moves back and forth repeatedly


A:
moves back and forth repeatedly