PhysicsTestReviewChap32-33 - Physics Test Review C hapte r...

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Physics Test Review Chapter 32-33 Electrostatics, Electric Fields and Potential Period: Name: 1 Mr. Lin Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Atomic nuclei of almost all elements consist of a) only neutrons. b) protons and electrons. c) neutrons and electrons. d) only protons. e) protons and neutrons. 2. Two like charges a) neutralize each other. b) repel each other. c) must be neutrons. d) attract each other. e) have no effect on each other. 3. The fundamental force underlying all chemical reactions is a) electrical. b) gravitational. c) centripetal. d) nuclear. e) none of the above 4. Coulomb's law says that the force between any two charges depends a) directly on the size of the charges. b) inversely on the square of the distance between the charges. c) both A and B d) none of the above 5. Two charges are separated by a certain distance. If the magnitude of each charge is doubled, the force on each charge is a) halved. b) doubled. c) tripled. d) quadrupled. 6. The net charge of a nonionized atom a) depends only on the number of electrons it has. b) is zero. c) usually cannot be determined. d) depends only on the number of protons it has. 7. A positive ion has a) more electrons than protons. b) more protons than electrons. c) a +1 charge always. d) one proton. 8. Conservation of charge means that a) the total amount of charge in the universe is constant. b) no experimenter has ever seen a single charge destroyed by itself. c) electrons by themselves can be neither created nor destroyed. d) charge can be neither created nor destroyed. e) all of the above 9. To say that electric charge is conserved means that no case has ever been found where a) the total amount of charge on an object has increased. b) one object has more charge than another object. c) the total charge on an object has changed. d) net charge has been created or destroyed. e) none of the above 10. A difference between electrical forces and gravitational forces is that electrical forces include a) infinite range. b) repulsive interactions. c) the inverse square law. d) separation distance. e) none of the above 11. In a good insulator, electrons are usually a) not moving at all. b) free to move around after an impurity has been added. c) free to move around. d) tightly bound in place. e) semi-free to move around. 12. Objects can be charged by a) induction. b) friction. c) touching. d) all of the above e) none of the above 13. Charge carriers in a metal are electrons rather than protons, because electrons are a) relatively far from a nucleus. b) loosely bound. c) lighter. d) all of the above e) none of the above 14. A conductor differs from an insulator in that a conductor has a) more protons than electrons. b)
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This note was uploaded on 11/18/2010 for the course CPHY 101 taught by Professor Jay during the Spring '10 term at University of Massachusetts Boston.

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PhysicsTestReviewChap32-33 - Physics Test Review C hapte r...

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