5.4.5 Electromagnets

Front

What is an electromagnet?

Back

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

Front

How can you turn an electromagnet on or off?

Back

You can turn an electromagnet on or off by controlling the electric current flowing through it.

Front

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

Back

An electromagnet can be turned on and off, while a permanent magnet always has a magnetic field.

Front

What happens when you bring unlike poles of a magnet together?

Back

Unlike poles of a magnet attract each other.

Front

What happens when you bring like poles of a magnet together?

Back

Like poles of a magnet repel each other.

Front

How can you make an electromagnet stronger?

Back

You can make an electromagnet stronger by adding more wire coils and/or batteries.

Front

What is the role of wire coils in an electromagnet?

Back

Wire coils create a magnetic field when electric current passes through them.

Front

What happens if you add more batteries to an electromagnet?

Back

Adding more batteries increases the electric current, making the electromagnet stronger.

Front

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

Back

A switch allows you to control the flow of electric current, turning the electromagnet on or off.

Front

What materials can be used to make an electromagnet?

Back

Common materials include iron, steel, and copper wire.