Electric and Magnetic Forces Review

Front

What does the magnetic field represent in a magnet diagram?

Back

The lines drawn around a magnet diagram represent the magnetic field.

Front

What is one way to NOT increase the strength of an electromagnet?

Back

Adding two iron cores inside the coiled wire (example two iron nails) does NOT increase the strength of an electromagnet.

Front

What do iron filings around a magnet demonstrate?

Back

Iron filings around a magnet demonstrate the magnetic field of one magnet.

Front

Can a paperclip be made into a temporary magnet?

Back

True, magnetic material such as a paperclip can be made into a temporary magnet.

Front

What are the three types of magnets?

Back

The three types of magnets are natural, permanent, and temporary.

Front

What is a natural magnet?

Back

A natural magnet is a magnet that occurs in nature, such as lodestone.

Front

What is a permanent magnet?

Back

A permanent magnet is a magnet that maintains its magnetic properties over time.

Front

What is a temporary magnet?

Back

A temporary magnet is a material that can be magnetized but loses its magnetism when the external magnetic field is removed.

Front

What is the role of electric current in an electromagnet?

Back

Electric current creates a magnetic field around the wire, which magnetizes the core.

Front

What materials are commonly used to make permanent magnets?

Back

Common materials used to make permanent magnets include iron, nickel, and cobalt.