Circuits & Electromagnets

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It can be turned on and off.

Front

Can electromagnets be turned on and off?

Back

True

Front

What materials are needed to create an electromagnet?

Back

Iron or steel (like a rod or nail) is needed to magnetize an object for electromagnetism.

Front

What is an electrical circuit?

Back

A closed path where electricity flows.

Front

What are the main components of an electromagnet?

Back

Battery, copper wire, and iron nail.

Front

What happens when an electric current flows through a wire?

Back

It creates a magnetic field around the wire.

Front

How can the strength of an electromagnet be increased?

Back

By increasing the number of coils of wire or increasing the electric current.

Front

What is the role of a battery in an electromagnet?

Back

The battery provides the electric current needed to create the magnetic field.

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.

Front

What is the function of a switch in an electrical circuit?

Back

A switch controls the flow of electricity in a circuit, allowing it to be turned on or off.