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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
As two oppositely charged particles approach each other, what happens to the electrical force between them?
The attractive force increases
The magnitude of the electric force decreases
The repulsive force increases
The magnitude of their charges increases
- 4. 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
- 5. Multiple Choice
The figure shows a neutral glass rod and a positively charged metal sphere.
Which of the following best describes the movement of charges as this glass rod touches the sphere?
Protons move from the sphere to the glass rod.
Electrons move from the sphere to the glass rod.
Electrons move from the glass rod to the sphere.
Protons move from the glass rod to the sphere.
- 6. Multiple Choice
What is the SI unit for charge?
Joules
Coulombs
Newtons
Meters
- 7. Multiple Choice
A balloon is rubbed on a student's head. What occurs because of this?
Charged particles on the balloon are destroyed
Positively charged particles move from head to balloon
Charged particles from the balloon are released into the air
Negatively charged particles move from head to balloon
- 8. Multiple ChoiceElectrostatic force F is directly proportional to:r^2 (distance squared)q1q2both q1 and q2
- 9. Multiple ChoiceWhen distance increases, electrostatic force ____________; we call this relationship ____________ proportionaldecreases;directlydecreases;inverselyincreases;inverselyincreases;directly
- 10. Multiple ChoiceThe Electric Force is strongest when charges are...close togetherfar apartthe electric force is constant everywhere
- 11. Multiple ChoiceWhat is the name of this device that is used to detect charges?beakerelectroscopevan de graff generatorchargometer
- 12. Multiple Choice
Electrical forces are stronger than gravitational forces.
True
False
- 13. Multiple Choice
Coulomb's law says that the force between any two charges depends
directly on the size of the charges
inversely on the square of the distance between the charges
both are correct
- 14. Multiple Choice
Approximately how much force would be generated by two charged objects held 2 m apart, if q1 has a charge of 3.0 C and q2 has a charge of 4.0 C?
0.5 N
1.5 N
3 N
6 N
- 15. Multiple Choice
Which is the value of the constant in Coulomb's equation?
k = 9·10-9
k = 9.8
k = 6.67·10-11
k = 9 ·109
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