The electric field always points in the direction from higher to lower potential. A. True B. False se 0% Fa l Tr ue 0% The SI unit of current is Rank 1 2 Responses 3 4 5 6 0% 0% 1 2 0% 0% 3 4 0% 0% 5 6 The SI unit of resistance is (the name, not the symbol) Rank 1 2 Responses 3 4 5 6 0% 0% 1 2 0% 0% 3 4 0% 0% 5 6 In metals, moving charges are A. a combination of positive and negative charges B. positive C. negative 0% 0% a co m bi n at io n of ive ga t ne po s it iv po sit i .. e 0% When induced, electric fields in a conductor travel with a speed approaching that of light. A. True B. False se 0% Fa l Tr ue 0% In the presence of an electric field on a conducting wire, electrons are accelerated to close to the speed of light along the conducting wire’s surface. A. True B. False se 0% Fa l Tr ue 0% Resistance and Resistivity both have the ohm as their SI unit of measure. A. True B. False se 0% Fa l Tr ue 0% The resistance of every conductor varies with temperature. A. True B. False se 0% Fa l Tr ue 0% Two wires made of pure copper have different resistances. These wires may differ in 0% 0% ve ab o th e of lo al no ne ft he ab o at ur pe r m te 0% ve e 0% vi ty 0% sis ti ar ea na l se ct io le ng th 0% re length cross-sectional area resistivity temperature all of the above none of the above cr os s- A. B. C. D. E. F. If a 1.50 A current flows through the leads of an electrical appliance. How many electrons per second pass through it ( ____x1018)? Rank 1 2 Responses 3 4 5 6 0% 1 0% 2 0% 3 0% 4 0% 5 0% 6 If a 1.50 A current flows through the leads of an electrical appliance. How long does it take for 7.50 C of charge to pass through it (in seconds)? Rank 1 2 Responses 3 4 5 6 0% 1 0% 2 0% 3 0% 4 0% 5 0% 6