Physics Principles and Problems 2009

Section 20.1 : Electric Charge

Self-Check Quizzes

1
What is a difference between the force of electric charge and that of gravity?
A)Electric force can be added to or removed from an object, gravity cannot.
B)Gravity is only in one direction, electric force is in all directions.
C)Electric charge is stored in a desktop, gravity is not.
D)Gravity does not have an effect on tape, electric force does.
2
Charges are created _____.
A)separately
B)between two oppositely charged objects
C)Ii pairs
D)from the force of gravity
3
How can a neutral object become charged?
A)by being dipped in water
B)by being stuck to a desk with tape
C)by allowing gravity to work on it
D)by having electrons added or removed
4
Which is an example of a good insulator?
A)aluminum
B)glass
C)plasma
D)water
5
Which is an example of a good conductor?
A)a plastic comb
B)copper wire
C)dry wood
D)a winter coat
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