Electricity and Magnetism Quiz #2

Students attach magnets to toy race cars. They want one car to push another car without touching it. How can the students arrange two cars so they will push each other without touching.

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The magnetic region surrounding a magnet is known as the:

• Magnetic Domain

• Lodestone

• A Compass

• Magnetic Field

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What will these magnets do?

• Attract

• Repel

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Which of the following objects are usually attracted to magnets?

• paperclips

• wooden pencils

• rubber bands

• plastic cups

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Why does a compass needle always point north?

• Due to the Earth's rotation

• Because the gravity of the Earth

• Due to solar energy

• Due to the Earth's magnetic field

What is magnetism?

• the ability of object to push or pull on another object

• the ability of an object to produce light

• the process of converting energy into motion

• the ability of an object to resist changing shape

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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 weaker battery.

• Reverse the poles of the magnet.
• Remove all the coils and the nail.

What is most likely to happen when the switch is closed?

• A magnetic field should be produced
• The nail will rust
• The nail will lose its magnetic field

• The wire will not conduct electricity

How do electromagnets differ from permanent magnets? 

• Electromagnets  can be turned off and on 

• Electromagnets need electricity to work

• The strength or electromagnets can be changed

• All of the above

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The force between the phone and the mount is a

• contact force

• non-contact force

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