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- 1. Multiple Choice
Which two particles are attracted to each other?
Two neutrons
A proton and an electron
Two protons
An electron and a neutron
- 2. Multiple Choice
A repulsive force exists between which two particles?
Two neutrons
An electron and a neutron
An electron and a proton
Two protons
- 3. Multiple Choice
What happens to the electric force between two charges when the distance is tripled?
3 times less electric force
3 time more electric force
9 times less electric force
9 times more electric force
- 4. Multiple Choice
What is the SI unit for charge?
Joules
Coulombs
Newtons
Meters
- 5. Multiple ChoiceWhen distance increases, electrostatic force ____________; we call this relationship ____________ proportionaldecreases;directlydecreases;inverselyincreases;inverselyincreases;directly
- 6. Multiple Choice
A 5 C and 8 C are 8 m apart. What is the force between them?
5.625 x 109
5.625 x 10-9
4.5 x 1010
4.5 x 10-10
- 7. Multiple Choice
A charge of 4 C and -7 C are 200 m apart. What is the force between them?
6.3 x 106
-6.3 x 106
2.52 x 1011
-2.52 x 1011
- 8. Multiple Choice
Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?
9 x 10-9 N
9 x 109 N
1.1 x 1010 N
1.1 x 10-10 N
- 9. Multiple Choice
A point charge of +3.0 X 10-7 coulomb is placed 2.0 X 10-2 meter from a second point charge of +4.0 X 10-7 coulomb. What is the magnitude of the electrostatic force on the charges?
6.0 X 10-12 N
3.0 X 10-10 N
5.4 X 10-2 N
2.7 N
- 10. Multiple Choice
Recap:
Coulomb’s law states that the force between two charged objects will __________ when the magnitude of the object’s charge increases.
Coulomb’s law also states that the force between two charged objects will __________ when the distance between objects increases.
increase; increase
increase; decrease
decrease; increase
decrease; decrease
- 11. Multiple Choice
A 5 C and 8 C charge give off a force of 2.5 x 109 N. What is the distance between them?
11 m
12 m
121 m
144 m
- 12. Multiple Choice
Calculate the force exerted between two charged objects separated by a distance of 0.6 m. One object has a charge of -5 C and the other has a charge of +2.0 C.
-1.5x 10-11 N
2.5 x 10-11 N
-2.5 x 1011 N
-7.5 x 10-10 N
- 13. Multiple Choice
A charge of 3 C is 27 m away from another charge. They exert a force of -2.59 x 108 N on each other. What is the 2nd charge?
5 C
-5 C
7 C
-7 C
- 14. Multiple Choice
What is the electric force between a 2.5 C charge and a negative 1 C charge when they are separated by a distance of 20 m?
1,125,000,000 N
56,250,000 N
0.125 N
0.00625 N
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