2nd October 2019

jlab
16

What is an electromagnet and how does it work?

Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity. An electromagnet works because an electric current produces a magnetic field.

Moreover, what is the role of the electromagnet in a motor?

They attract so this creates a rotational motion which is what makes the motor run. The armature is an electromagnet, which is a magnet whose magnetic field is produced by the flow of electric current. The field magnets are permanent magnets. The brushes work with the circuit to let current flow to the electromagnet.

How does the electromagnet work in an electric motor?

When current from the voltage source flows through the coil, a magnetic field is produced around the electromagnet. The poles of the magnet push on the like poles of the electromagnet, causing the electromagnet to turn. As the motor turns, the opposite poles pull on each other.

What is the use of electromagnets?

Electromagnets are widely used as components of other electrical devices, such as motors, generators, electromechanical solenoids, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment.
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