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Topic 4.2
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1
Electrons…
A)never move.
B)are more massive than protons.
C)carry a positive charge.
D)carry a negative charge.
2
When electrons are rubbed off a material…
A)the material becomes neutral.
B)the material becomes negatively charged.
C)the material becomes positively charged.
D)the material is unchanged.
3
A neutral object has…
A)more protons than electrons.
B)more electrons that protons.
C)an equal number of protons and neutrons.
D)an equal number of protons and electrons.
4
When a balloon is rubbed on your hair…
A)the negative charges are transferred from the balloon to your hair.
B)the negative charges are transferred from your hair to the balloon.
C)the positive charges are transferred from your hair to the balloon.
D)the positive charges are transferred from the balloon to your hair.
5
The law of electric charge states that…
A)opposite charges repel each other.
B)like charges repel each other.
C)neutral objects repel positive charges.
D)neutral objects repel negative charges.
6
Electrical charges will best move through…
A)copper wire.
B)plastic.
C)wood
D)rubber.
7
Materials that do not allow electrical charges to move through them easily are known as…
A)conductors.
B)generators.
C)insulators.
D)neutral objects.





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