Electromagnetism

How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs
• Add more light bulbs and/or wire coils
• add more wire coils and/or a switch
• add more wire coils and/or batteries

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What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

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What is magnetic force?

• A force exerted by electrically charged particles

• A force exerted by magnets that can be felt by objects near a magnet

• A force exerted by magnets that makes an object become electrically charged

• A force exerted by a magnet only when it physically touches an object

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The picture above is an example of what?

• Magnetic field

• Electric field

• Repulsion

• Attraction

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What would happen with the magnets in the picture above?

• They would repel

• Nothing

• They would attract

• They would repel and then attract

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Which answer describes a magnet best.

• A material that has two north poles

• A material that has a two south poles

• A material that has a north and a south pole

• An electron

A magnet will pick up an object that is made of...

• plastic

• iron or steel

• glass

• copper

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True or False: All metals stick to magnets.

• True
• False

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When running a current through a wire, what do the blue lines represent?

• The wire spinning

• A magnetic field that was created

• Electrons leaving

• Electricity

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Which one represents the magnetic field lines of magnets repelling?

• A

• B

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