Magnetism & Electromagnetism Review

What is an electromagnet?

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Which of the following are magnetic poles?

• North and South

• East and West

• Red and blue

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Which of the following is not a magnetic material?

• steel

• cobalt

• aluminium

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What do two unlike poles do when they are brought close together?

• They attract

• They repel

• Nothing

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The arrow on magnetic field lines shows them flowing in which direction?

• from South to North

• from North to South

• from left to right

Where are the field lines most concentrated around a bar magnet?

• at both poles

• in the middle

• at the North pole only

What is one difference between electromagnets and bar magnets?

• Bar magnets can be turned off but electromagnets cannot

• Bar magnets have a magnetic field but electromagnets do not

• Electromagnets need electricity but bar magnets do not

What is created around the solonoid?

• Magnetic Field

• Electric Field

• A gravitational field

• Nothing

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How can you increase the magnetic field between two bar magnets?

• Move them farther apart.

• Drop them.

• Move them closer together.

• Heat them up.

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Which of the following properties do all magnets have in common?

• North and South Poles

• Magnetic field lines.

• Strongest at the poles.

• Domains are all aligned in one direction.