Electricity (Pt. II): Question Preview (ID: 3658)


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A 'ground' is simply a
a) large object that serves as an almost infinite source of electrons or sink for electrons. b) small object that serves to reset plugs/outlets. c) large object that helps you not get shocked. d) place you faint on when you get an electric shock.
Two neutral conducting cans are touching. A (-) charged balloon is brought near Can X. As the balloon approaches, there is a movement of electrons between the balloon and Can X.
a) TRUE b) FALSE c) d)
Charging by conduction involves
a) the contact of a charged object to a neutral object. b) the contact of a negatively charged object to a positively charged object. c) the contact of a positively charged object to a positively charged object. d) the contact of a charged object to an oppositely charged object.
Coulomb's Law takes into account:
a) quantity of two charges and the distance between the two. b) quantity of two charges, their distance, and Coulomb's law constant, k. c) Newton's laws of inertia. d) none of the above.
The Q in Coulomb's law equation stands for the
a) mass of a charged object b) current of a charged object c) charge of a charged object d) distance between the charged objects.
The r in Coulomb's law equation stands for the
a) mass of a charged object b) current of a charged object c) charge of a charged object d) distance between the charged objects.
19. An originally neutral electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscope
a) remains neutral b) is negatively charged c) is positively charged d) could be either positive or negative, depends on how long contact occurred.
An atom has more electrons than protons. The atom is
a) a positive ion b) a negative ion c) a superconductor d) a super-insulator
How can a negatively charged rod charge an electroscop positively?
a) By conduction. b) By induction. c) By deduction. d) It cannot.
16. An electron and a proton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the f1st electron if a 2nd electron is placed next to the proton?
a) It doubles. b) It does not change. c) It is reduced to half. d) It becomes zero.
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