Why electromagnets work?

Answer 1

When you wrap the wire around the nail, make certain that you wrap the wire all in one direction. You need to do this because the direction of a magnet field depends on the direction of the electric current creating it. The movement of electric charges creates a magnetic field. If you could see the magnetic field around a wire that has electricity flowing through it, it would look like a series of circles around the wire. If an electric current is flowing directly towards you, the magnetic field created by it circles around the wire in a counter-clockwise direction. If the direction of the electric current is reversed, the magnetic field reverses also and circles the wire in a clockwise direction. If you wrap some of the wire around the nail in one direction and some of the wire in the other direction, the magnetic fields from the different sections fight each other and cancel out, reducing the strength of your magnet.

How_does_a_electromagnet_work

Answer 2

Electromagnets work by running an electric current through a coil of wire, creating a magnetic field. This magnetic field can attract or repel other magnetic materials, allowing electromagnets to be used in a variety of applications such as electric motors, relays, and speakers. The strength of the magnetic field can be controlled by adjusting the amount of current running through the wire.