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- 1. Multiple Choice
In order to create an electric charge, what type of particle must be added or removed from an object?
proton
electron
neutron
alpha particle
- 2. Multiple Choice
A balloon has a negative charge. A glass rod has a positive charge. What will happen when the rod is brought near the balloon?
the balloon will be attracted to the rod
the balloon will remain in place
the balloon will be repelled by the rod
the balloon will spin in circles
- 3. Multiple Choice
Two charges are near each other. The magnitude of both charges is doubled. By what factor will the Coulomb force change?
2
4
1/2
1/4
- 4. Multiple Choice
If the distance between two charges triples, by what factor will the force between them change?
3
9
1/3
1/9
- 5. Multiple Choice
What is the magnitude of the electric force between two charges of 1.0C separated by a distance of 1.0m?
9.0x10^9 N
1.1x10^10 N
9.0x10^19 N
1.1x10^-10 N
- 6. 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-11N-2.5E11N-2.5E-11N-7.5E-10N
- 7. Multiple ChoiceTwo oppositely charged particles are held in place near each other. When the particles are released, what will most likely happen?they will accelerate towards each otherthey will accelerate away from each otherthey will move towards each other at a constant speedthey will move away from each other at a constant speed
- 8. Multiple ChoiceThe distance between two charges doubles at the same time that the charge on each also doubles. What happens to the electric force?doublesquadruplescut in halfno change
- 9. Multiple Choice
As shown in the figure, the charge Q is midway between two other charges. If Q= -7.5 nC what must be the charge q1 so that charge q2 remains stationary as Q and q1 are held in place?
30 nC
15nC
7.5nC
60nC
- 10. Multiple ChoiceIf an object has a net charge of +2e this means it haslost 2 electronsgained 2 electronslost 2 protonsgained 2 protons
- 11. Multiple ChoiceAn object with a charge of -2q is brought into contact with an identical object with a charge of +5q. The objects are then separated. Each object now has what charge respectively?+5q and -2q+1.5q and -1.5q+3.5q and +3.5q+1.5q and +1.5q
- 12. Multiple ChoiceTwo positive point charges repel each other with force 0.36 N when their separation is 1.5 m. What force do they exert on each other when their separation is 1.0 m?0.81N0.36N0.24N0.16N
- 13. Multiple Choice
Two small hollow metal spheres hung on insulating threads attract one another as shown. It is known that a positively charged rod will attract sphere A. Which statements can be correctly concluded about the charge on the spheres?
A has a positive charge
B has a negative charge
A and B have opposite charges
A is neutral
- 14. Multiple Choice
As shown above, two particles, each of charge +Q, are fixed at opposite corners of a square that lies in the plane of the page. A positive test charge +q is placed at a third corner. What is the direction of the net force on the test charge due to the other two charges?
- Answer choicesTagsAnswer choicesTags