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- 1. Multiple Choice
When distance increases, electrostatic force ____________
decreases
increases
- 2. Multiple ChoiceWhat variable is a Coulomb the unit for?ChargeForceDistanceMass
- 3. Multiple ChoiceWhat variable do "Newtons" represent?Electrostatic ChargeForceDistanceMass
- 4. 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
- 5. Multiple ChoiceThe Electric Force is strongest when charges are...close togetherfar apartthe electric force is constant everywhere
- 6. 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
- 7. 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
- 8. Multiple Choice
5 C and 8 C charges 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
- 9. Multiple Choice
Two charges of equal value (-50 C) are 1000 m away from each other. What is the force between them?
.0025 N
22,500,000 N
2500
1.6675 x 10-13 N
- 10. 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
- 11. Multiple ChoiceFind the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?9E-9 N9E9 N1.1E10 N1.1E-10 N
- 12. Multiple ChoiceCalculate 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.-1.5E-11 N2.5E-11 N-2.5E11 N-7.5E-10 N
- 13. 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
- 14. Multiple ChoiceWhat is the magnitude of the electrostatic force that a charge of +3.0 X 10-5 coulomb exerts on a charge of +6.0 X 10-6 coulomb that is 0.30 meter away?1.8 X 10-3 N5.4 X 10-2 N5.4 X 100 N1.8 X 101 N
- 15. 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
- 16. Multiple ChoiceWhen distance increases, electrostatic force ____________; we call this relationship ____________ proportionaldecreases;directlydecreases;inverselyincreases;inverselyincreases;directly
- 17. Multiple ChoiceWhat happens to the force between two charged objects when you double the distance between them?2X1/2X4X1/4X
- 18. Multiple ChoiceWhat happens to the force between two charged objects if you double the distance between them and double the magnitude of one charge?4X6X1/2X1/6X
- 19. Multiple ChoiceIf each of the charges doubles, what happens to the force?QuadruplesDoublesStays the sameReduced by half
- 20. Multiple ChoiceIf the distance doubles, what happens to the force?Reduced by halfReduced by 1/4Stays the sameQuadruples
- 21. Multiple ChoiceElectrostatic force F is directly proportional to:r^2 (distance squared)q1q2both q1 and q2
- 22. Multiple Choice
The graph shows the relationship between the force of interaction and the magnitude of charge. What type of relationship is this?
Direct
Indirect
Inverse
Reverse
- 23. Multiple Choice
The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the magnitude of charge on q2 doubles?
9.6 N
4.8 N
1.2 N
.6 N
- 24. Multiple Choice
The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the distance doubles?
4.8 N
1.2 N
.6 N
.3 N
- 25. Multiple Choicedirect variationinverse variationneither direct nor inverse variation
- Answer choicesTagsAnswer choicesTags