Question

Name any two devices which use permanent magnets.

Answer 1

Magnets are used in permanent magnet motors and generators.

Answer 2

Answer:

1. Microphones.

2. Electric generators.

Explanation:

Permanent magnet is the magnet which produces magnetic field for longer period of time.  

1. Microphones use magnetic field where the coil attached to diaphragm is placed. When the sound waves are produced, the diaphragm vibration moves the coil which oscillates the magnetic field which in turn produces the audio.
2. The generator uses permanent magnet which have winding where the electric current is produced on rotating the magnet.