1 A) spread out over the surface of the conductor B) stay where they are placed C) gather in the center of the conductor D) vanish after a few moments 2 A) neutral B) static C) electrified D) positively-charged 3 A) conductors B) insulators C) facilitators D) plastics 4 A) electrically neutral B) unstable C) negatively-charged D) positively-charged 5 A) positive and negative B) static and dynamic C) high and low D) destructive and constructive 6 The best explanation for why the phenomenon in the figure below occurs is ____.
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617928/ne.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (18.0K)</a>]]> A) the paper bits are gravitationally attracted to the ruler. B) the opposite electrical charges on the ruler and paper bits are attracted to each other. C) the paper bits are magnetically attracted to the ruler. D) the same electrical charges on the ruler and paper bits are attracted to each other. 7 A) not react B) fuse C) repel each other D) attract each other 8 A) ions B) conductors C) grounders D) insulators 9 If a charge were added to the figure below between the two charges already there, what direction would the net force on it be?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617928/nf.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]> A) To the right if charge is positive, to the left if it's negative. B) To the right, regardless of its sign C) To the left if charge is positive, to the right if it's negative. D) This cannot be determined without knowing more about the location of the charge 10 -6 C, are 0.20 m from each other. What force acts on each particle and in what direction?A) 1.2×101 N, repulsive B) 2.5×103 N, attractive C) 1.2×101 N, attractive D) 3.0×105 N, repulsive 11 In the figure below, if the charge on the rod were positive, what effect, if any, would this have on the final result?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617928/ng.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (16.0K)</a>]]> A) The left sphere would still be positive and the right sphere would still be negative, but there would be more total charge on each. B) It would have no effect. C) The left sphere would be negatively charged and the right sphere would be positively charged, with the same amount of charge as in the original picture c. D) The left sphere would still be positive and the right sphere would still be negative, but there would be less total charge on each. 12 -4 C, are separated by a distance of 10.0 cm. What is the force and direction of the force on each of the particles?A) 6.6×104 N, attractive B) - 6.6×104 N, attractive C) 6.6×104 N, repulsive D) 6.6×102 N, repulsive 13 A) ohm B) coulomb C) volt D) joule 14 In the figure below, if q 1 is 2.0 mC, q 2 is 3.0 mC, and the separation between them is 2.5 m, what is the magnitude of the force between them?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617928/nh.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]> A) 8600 N B) 2.4 N C) 5400 N D) 220,000 N 15 4 N exists between a positive charge of 3.9×10-5 C and a negative charge of -6.7×10-5 C. What distance separates the charges?A) 1.7×10-2 m B) 1.4×102 m C) 2.9×10-4 m D) 1.7×102 m 16 3 N exists between a positive charge of 5.6×10-4 C and a negative charge of -2.1×10-4 C. What distance separates the charges?A) 0.14 m B) 3.7 m C) 0.37 m D) 1.4 m 17 -9 N when separated by a distance of 3.9 × 10-10 m. What is the charge of each?A) -3.1 × 10-19 C B) 3.1 × 10-19 C C) 1.0 × 1037 C D) 4.3 × 1010 C 18 -3 C and a positive charge of 6.5×10-3 C are separated by 0.50 m. What is the magnitude of the force between the two charges?A) 1.1 × 106 N B) 2.9 × 10-5 N C) 2.6 × 105 N D) 2.2 × 106 N 19 In the figure below, if the charge on the rod were decreased, what effect, if any, would this have on the final result?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617928/ng.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (16.0K)</a>]]> A) The left sphere would still be positive and the right sphere would still be negative, but there would be less total charge on each. B) The left sphere would still be positive and the right sphere would still be negative, but there would be more total charge on each. C) It would have no effect. D) The left sphere would be negatively charged and the right sphere would be positively charged, with the same amount of charge as in the original picture c. 20 A) the magnitude of the force between two charges is inversely proportional to the magnitude of the charges and proportional to the square of the distance between them B) the ratio of the potential difference to the current is constant C) the direction of the magnetic field in a wire is perpendicular to the flow of electric current in the wire D) the magnitude of the force between two charges is proportional to the magnitude of the charges and inversely proportional to the square of the distance between them 21 A) equal; same B) unequal; same C) equal; opposite D) unequal; opposite 22 In the figure below, if q <1 is 3.0 mC, q 2 is -7.0 mC, and the separation between them is 3.0 m, what is the magnitude of the force between them?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617928/nf.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]> A) 21,000 N B) 63,000 N C) 43,000 N D) 7200 N 23 A) charge separation is used to charge an object without touching it B) electric charge causes the leaves of an electroscope to spread apart C) a neutral body is charged by touching it with a charged body D) a negatively-charged rod is touched to the knob of an electroscope 24 A) negative charge B) secondary charge C) frequency D) elementary charge 25 A) 77 N, right B) 77 N, left C) 160 N, right D) 83 N, right 26 A) electroscope B) conducting sphere C) oscilloscope D) cathode-ray tube 27 A) 9.6 × 1015 m B) 1.6 × 10-19 m C) 1.5 × 10-14 m D) 9.6 × 10-15 m 28 A) It increases. B) It decreases. C) It vanishes. D) It stays the same. 29 A) apply Coulomb's law B) unlike charges repel, like charges attract C) direction is determined by magnitude D) like charges repel, unlike charges attract 30 A) 1.6 × 10-19 m B) 7.2 × 10-15 m C) 1.8 × 10-5 m D) 9.6 × 10-15 m 31 A) Static discharge B) Charging by infusion C) Charging by conduction D) Charging by induction
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