Questions 6-13 with little work if needed

5216 - 2 - Page 2 6) If 1.0 joule of work is required to move a charge of 1.0 coulomb between two points in an electric field, what is the potential difference between these two points? A) 9.0 x 109 V D) 6.3 X 1018 v B) 1.0 V C) 1.6 x 10-19 V 7) How much work is required to move a single electron through a potential difference of 100. volts? A) 1.0x 102 J B) 1.6 X 10-21 J C) 1.6 X 10-17 J D) 1.6 x 10-19 J S) The diagram below shows two identical metal spheres, A and B, on insulated stands. Each sphere possesses a net charge of -3 x 10-6 coulomb. -3 x 10-6 C -3 x 10-6 C If the spheres are brought into contact with each other and then separated, the charge on sphere A will be A) OC B) -6x 10-6 C C) +3 x 10-6 C D) -3 x 10-6 C 9) When a neutral metal sphere is charged by contact with a positively charged glass rod, the sphere A) gains protons B) loses protons C) loses electrons D) gains electrons 10) Which diagram best represents the electric field around a negatively charged conducting sphere? A) C) B D) 11) An electrostatic force of 20. newtons is exerted on a charge of 8.0 x 10"2 coulomb at point P in an electric field. What is the magnitude of the electric field intensity at P? A) 2.5x 102 N/C B) 1.6 N/C C) 20. N/C D) 4.0 x 10-3 N/C 12) .An electrostatic force of magnitude F exists between two metal spheres having identical charge q. The distance between their centers is r. Which combination of changes would produce no change in the electrostatic force between the spheres? A) doubling q on one sphere while halving r C) doubling q on both spheres while doubling r B) doubling q on both spheres while halving r D) doubling q on one sphere while doubling r 13) An object cannot have a charge of A) 4.5x 10-19 C B) 3.2 x 10-19 C C) 9.6 x 10-19 C D) 8.0 x 10-19 C