Multiple choice

Which of the following generates an electric current when rotated?

  1. A battery

  2. A magnet

  3. A domain

  4. Wire loop

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If a loop of wire is rotated within a magnetic field, the motion of the wire loop with respect to the magnetic field produces an electrical field in the wire.