1. Electrostatics

2. ____ are the charged parts of an atom.
a. Only electrons
b. Only protons
c. Neutrons only
d. Electrons and neutrons
e. Electrons and protons
f. Protons and neutrons

3. TRUE or FALSE: An object that is positively charged contains all protons and no electrons.

4. TRUE or FALSE: An object that is negatively charged could contain only electrons with no accompanying protons.

5. True or False: Since the proton is much more massive than the mass of an electron, the magnitude of its charge is also significantly greater.

6. Identify the following particles as being charged or uncharged
Identify the following particles as being charged or uncharged. If charged, indicate whether they are charged positively or negatively. (n = neutron, p = proton, e = electron)

7. Consider the graphic below of a neutral oxygen atom. a
Consider the graphic below of a neutral oxygen atom. a. Explain what must happen in order for the oxygen atom to become negatively charged. b. Explain what must happen in order for the oxygen atom to become positively charged.

8. Determine the quantity and type of charge on an object that has 3
Determine the quantity and type of charge on an object that has 3.62 x 1012 more protons than electrons.
Answer: +5.8 x 10-7 Coulombs
To determine the charge on an object, determine the number of excess protons or excess electrons. Multiply the excess by the charge of an electron or the charge of a proton x C. Finally, adjust the sign of the object to + or -.

9. A very small sample of an object has 8. 25749 x 1017 protons and 5
A very small sample of an object has x 1017 protons and 5.26 x 1014 electrons; the charge on this object is ____ Coulombs.
0.132 C

10. A very small sample of an object has 3. 12 x 1014 protons and 4
A very small sample of an object has 3.12 x 1014 protons and x 1016 electrons; the charge on this object is ____ Coulombs.
C (7.23 x 10-3 C)

11. A very small sample of an object has 2. 40277 x 1019 protons and 9
A very small sample of an object has x 1019 protons and 9.88 x 1016 electrons; the charge on this object is ____ Coulombs.
3.83 C

12. A very small sample of an object has 2. 6325 x 1015 protons and 2
A very small sample of an object has x 1015 protons and x 1015 electrons; the charge on this object is ____ Coulombs.
0 Coulombs

13. The amount of charge carried by a lightning bolt is estimated at 10 Coulombs. What quantity of excess electrons is carried by the lightning bolt?
6.25 x 1019 electrons

14. Respond to the following student statement: "A positively charged object is an object that has an excess of positive electrons."

15. Electrical forces can cause objects to ____. a
Electrical forces can cause objects to ____. a. only attract each other b. only repel each other c. attract or repel each other d. have no effect on objects

16. A is either + or neutral; C is -

17. A is + and C is +

18. Upon entering the room, you observe two balloons suspended from the ceiling. You notice that instead of hanging straight down vertically, the balloons seems to be repelling each other. You can conclusively say ... a. both balloons have a negative charge. b. both balloons have a positive charge. c. one balloon is charge positively and the other negatively. d. both balloons are charged with the same type of charge.

19. The q in Coulomb’s Law equation stands for the ____.
A.) mass of a charged object B.) the current of a charged object C.) the charge of an object D.) the distance between the charged objects

20. A person scuffs their feet as they walk across the carpet
A person scuffs their feet as they walk across the carpet. Their shoes develop a charge of -9.6 μC. What is the charge on the carpet?

21. Two identical conducting spheres are placed with their centers 50 cm apart. One sphere has a charge of 24 x10-10 C and the other has a charge of -2 x10 -10C. If a conducting wire connected them, what would be the charge on each sphere once equilibrium occurs.
11 x C