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AP Physics 2 – Electrostatics Test Review
Questions
1. Fill in the following table:
Type of charge
Kind of charge
Proton
Electron
Neutron
Amount of charge
Mass
2.
3.
4.
5.
6.
What surrounds any charge or group of charges?
Describe an electric field.
What surrounds a proton?
What are field lines?
If a hollow metal sphere has a large charge, what will be the relative strength of the electric field
inside the sphere?
7. Where does excess charge reside on a spherical conductor?
8. Explain charging by friction.
9. Explain charging by conduction.
10. Explain charging by induction.
11. What is charge polarization?
12. Why does a person’s hair stand out when in contact with a Van de Graaff generator?
13. Describe the electric field present between two oppositely charge metal plates.
14. What is the underlying force in all chemical reactions?
15. Fill in the following table:
Quantity being measured
Symbol
Unit
-Electric force
-Charge
-Electric Field
-Coulomb’s constant
16. When are electrical forces between charges the strongest?
17. What is Coulomb’s Law?
18. If two charges are separated by a certain distance and the distance is doubled, what happens to
the force between the charges?
19. If two charges have a charge of 2.0 C and the charge on one is doubled, what happens to the
force between the charges?
20. If two charges have a charge of 2.0 C and the charge on both is doubled, what happens to the
force between the charges?
21. What is an ion?
22. What is the charge on a non-ionized atom?
23. Why is a positive ion positive?
24. What is conservation of charge?
25. How are electrical forces and gravitational forces alike?
26. How are electrical forces and gravitational forces different?
27. Why does an insulator insulate?
28. What property of a conductor makes it a good conductor?
29. Two charged particles held close to each other are released. As they move, the force on each
particle increases. Therefore, the particles are…?
30. Two charged particles held close to each other are released. As the particles move, the velocity of
each increases. Therefore, the particles are…?
Problems
1. How many electrons make up a charge of – 60 μC?
2. What is the magnitude of the electric force of attraction between an oxygen atom (q = +8e) and
its innermost electron if the distance between them is 1.3 pm?
3. What is the magnitude of the force a + 20.0 μC charge exerts on a + 5.0 mC charge that is 25 cm
away?
4. What is the magnitude and direction of the electric force on an electron in a uniform electric field
of strength 5500 N/C that points north?
5. A force of 12.5 N is exerted on a -1.7 μC charge in an upward direction. What is the magnitude
and direction of the electric field at this point?
6. Draw the field lines on a negative charge.
7. Draw the field lines on a positive charge.
8. Draw the field lines between a +3 charge and a -1 charge.