Question

what are the similarities between a motor and an electromagnet

Answer 1

An electric current in a conductor produces a magnetic field. Electric motors and loudspeakers both use electromagnets. These are made by coiling wire carrying a current around a magnetic core.

Electromagnets

When an electric current flows in a wire it creates a magnetic field around the wire. By winding the wire into a coil we can strengthen the magnetic field. Electromagnets are made from coils like this.

We can make an electromagnet stronger by:

1. wrapping the coil around an iron core
2. adding more turns to the coil
3. increasing the current flowing through the coil

The magnetic field around an electromagnet is just the same as the one around a bar magnet. It can, however, be reversed by turning the battery around. Unlike bar magnets, which are permanent magnets, the magnetism of electromagnets can be turned on and off just by closing or opening the switch.

Relays are electrically operated switches. They use an electromagnet, often to control a high-power circuit using a low-power signal or where multiple circuits need to be controlled by one circuit.

Answer 2

Answer:

Explanation:1.It both works on magnetic induction .

2.It works on temporary magnet.

3.When electricity supplied it both works on it.

4.coils of copper are used in both to make the magnetic power.