Electromagnetism

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet that is created by an electric current. It can be turned on and off, unlike permanent magnets.

Front

What surrounds every magnet?

Back

Every magnet is surrounded by a magnetic field, which is the area around the magnet where magnetic forces can be detected.

Front

What are the two ends of a magnet called?

Back

The two ends of a magnet are called the North and South poles.

Front

How does increasing the number of coils affect an electromagnet?

Back

Using more coils increases the strength of the electromagnet.

Front

What device uses electricity to create mechanical energy through electromagnetism?

Back

An electric motor uses electricity to create an electromagnet that pushes and pulls on permanent magnets to produce mechanical energy.

Front

What is a magnetic field?

Back

A magnetic field is an invisible field around a magnet where magnetic forces can be felt.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field, while an electromagnet's magnetic field can be turned on and off with electricity.

Front

What is the role of electricity in electromagnetism?

Back

Electricity is used to create a magnetic field in an electromagnet, allowing it to exert magnetic forces.

Front

What happens to an electromagnet when the electric current is turned off?

Back

When the electric current is turned off, the electromagnet loses its magnetic field and becomes inactive.

Front

Can an electromagnet be used to lift heavy objects?

Back

Yes, electromagnets can be designed to lift heavy objects, such as scrap metal, when electricity is applied.