Exam2_2007

Exam2_2007 - Name_ General Physics 114 Test #2 March 14,...

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March 14, 2007 Name_____________________ The first three questions refer to the diagrams below. In each Case, the dotted lines represent equipotential lines with the indicated potentials. A +1μC charge is moved from the point labeled A to the point labeled B. 1. In considering the amount of work necessary to move the +1μC charge from A to B in each case, which of the following is true? a) The most work is needed in case 1. b) The most work is needed in case 2. c) The most work is needed in case 3. d) All three require the same amount of work. e) Cases 2 and 3 require equal work, and it is more than Case 1. 2. How does the magnitude of the electric field at B compare for these three cases? a) Case 1 > Case 3 > Case 2 b) Case 1 > Case 2 > Case 3 c) Case 3 > Case 1 > Case 2 d) Case 2 > Case 1 > Case 3 e) Case 1 = Case 2 = Case 3 3. For Case 3, what is the direction of the electric field at point A and B? a) Up at A; Up at B b) Down at A; Down at B c) Up at A; Down at B d) Down at A; Up at B e) The electric field is zero at both 4. What is the speed of a proton (mass = 1.67 x 10 -27 kg, charge = 1.60 x 10 -19 C) that has been accelerated from rest through a potential difference of 16.0 kV?
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Exam2_2007 - Name_ General Physics 114 Test #2 March 14,...

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