Question

Name any three devices which use permanent magnets. Name some sources of direct current.​

Answer 1

Answer:

Motor, car, generators, headphones uses permanent magnets

Direct current source - - electric cell, battery

Answer 2

Answer:

Devices which use permanent magnet are :-

1. Needle in the compass.

2. Electric motors

3. Speakers

and many more devices.

Source of direct current:-

The most used source of direct current is Battery. Solar cells, fuel cells, and even some types of generators can provide DC current. DC, or direct current means the electrical current is flowing in only one direction in a circuit. Batteries are a good source of direct current (DC).