Electromagnetism

This picture best illustrates the construction of a(n)

• magnet

• electromagnet

• series circuit

• parallel circuit

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This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

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A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

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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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The ability of some materials to attract certain metals is called

• Electricity
• Magnetism
• Electromagnetism
• Atoms

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The process of creating a current in a circuit by changing a magnetic field

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. magnet

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Which of the following are two kinds of magnets?

• A. atoms, domains
• B. magnetic fields, magnetic poles
• C. ferromagnets, electromagnets
• D. magnesia magnets, magnetite magnets

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The strongest parts of the magnet are ...

• fronts

• backs

• poles

• middle

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

• plastic

• iron or steel

• glass

• copper

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