Electricity an Magnetism Review

Where is a bar magnets field the strongest?

• In the middle

• At the poles

• The farther you move from the magnet.

• In the magnetic field lines.

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How can a paper clip become a temporary magnet?

• by touching a magnet

• The paper clip creates an electric charge.

• You point the paper clip towards the North Pole.

• The domains in the paper clip become aligned.

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What is created around the solonoid?

• Magnetic Field

• Electric Field

• A gravitational field

• Nothing

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Which magnetic direction does a compass needle point?

• North

• East

• West

• South

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 uses a magnetic field to operate?

• Refrigerator

• Faucet

• Toilet

• Bicycle

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.

What property of magnets is demonstrated in this image?

• Aligned domains.

• Opposites attract.

• Field gets weaker the farther you move away from the magnet.

• If you cut a magnet in half you get two magnets.

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In the diagram, when is a magnetic field created around the nail?

• When electricity is run through the nail.

• The domains are unaligned.

• The nail could rust.

• It breaks in half..

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How can the strength of an electromagnet be increased?

• Increase the current/amount of electricity.

• More loops around the iron core.

• What the core is made of.

• What is being attracted to the magnet.

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