2018 *Updated SOL 5.4 Electricity Review

Front

What is formed when an electric current flows through a wire wrapped around an iron nail?

Back

An electromagnet is formed.

Front

How can you increase the strength of an electromagnet?

Back

You can increase the number of coils around the nail.

Front

What material should you wrap around an iron nail to create a stronger electromagnet?

Back

Copper wire should be used.

Front

What are materials that do not allow electricity to flow easily through them called?

Back

They are called insulators.

Front

What type of energy is transformed when using a lamp?

Back

Electrical energy is transformed into radiant energy.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What is the role of coils in an electromagnet?

Back

Coils increase the strength of the magnetic field when electric current flows through them.

Front

What is a conductor?

Back

A conductor is a material that allows electricity to flow easily through it.

Front

Give an example of an insulator.

Back

Rubber is an example of an insulator.

Front

What happens to the strength of an electromagnet if you decrease the number of coils?

Back

The strength of the electromagnet decreases.