Electromagnetism Form2

What is magnetic force?

• A force exerted by electrically charged particles

• The attractive and repulsive forces between two poles

• 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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What is magnetic force?

• A force exerted by electrically charged particles

• The attractive and repulsive forces between two poles

• 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

What happens to the strength of a magnetic field as you move away from the magnet?

• The strength of the magnetic field increases.

• The strength of the magnetic field doesn't change.

• The strength of the magnetic field is doubled.

• The strength of the magnetic field decreases.

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What is a magnetic material?

• A material that becomes positively charged when a magnet is brought near it.

• A material that produces a magnetic force.

• A material that becomes negatively charged when a magnet is brought near it.

• A material that is attracted or repelled by a magnet.

What happens if you cut a magnet in half?

• Nothing

• The magnets repel

• There will be two magnets

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Where does a compass well when navigating the Earth? Where does a compass not work well on the Earth?

• well: near the poles

  not well: away from the poles

• works well everywhere

• well: away from the poles

  not well: near the poles

• well: everywhere

  not well: space

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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Why are these magnets not touching?

• They are like poles and are repelling

• They are opposite poles and are repelling

• There is an electric field

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Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

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