Electromagnet Coil Theory

Electromagnets are incredible magnets that can be used for many different purposes. Understanding the science behind electromagnets can expand your knowledge of these fascinating tools--which are widely used in society.

Magnetic Force

Magnetic force occurs when the atoms in a piece of metal lose or gains electrons. The atoms will then seek out stray electrons in other pieces of metal, which will actually draw them closer together.

Electromagnets

Electromagnets are pieces of metal that are magnetized by electricity.

Theory

The electricity that pumps through an electromagnet causes the electrons in the metal to become unbalanced. This creates a powerful magnetic field as long as the electricity is pumped through metal.

Uses

Electromagnets are used in electric bells, circuit breakers, loud speakers and microphones. Powerful electromagnets are also used in junkyards to lift pieces of junk metal.

Creation

Making electromagnets is simple. Attach a wire to a battery and wrap it around a piece of metal. Turn on the current. All electromagnets operate under this basic principal.

References

• Energy Quest: How to Make an Electromagnet
• GCSE Science Physics High School: Electromagnetism
• Cool Magnet Man: What is an Electromagnet