Quiz 6 - PointsAwarded PointsMissed Percentage 7 13 35% 1.

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Points Awarded  7 Points Missed  13 Percentage  35%
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1. When a xerographic copier first applies electric charges to the surface of its photoconductor, it does so in the  dark. The reason for applying these charges in the dark is that light exposure would A. cause the magnetic poles to move, generating  electricity that would neutralize the electric charges. B. allow the charges to flow through the photoconductor  so that they wouldn’t accumulate on its surface. C. release magnetic poles that would cancel the electric  charges. D. expand the coherence of the waves and prevent the  charges from forming a real image on the surface. Points Earned: 1/1 Correct Answer: B Your Response: B 2. A typical commercial jet has a sharpened metal rod projecting backward from the tip of each wing. These two  rods prevent the airplane from accumulating a large net electric charge during flight by A. maintaining a steady electric current between the  airplane’s wings. B. reducing sliding friction between the airplane and the  passing air stream. C. transferring any charge on the plane to the air behind  the plane. D. generating high voltages while passing quickly through  the earth’s magnetic field. Points Earned: 1/1 Correct Answer: C
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C 3. You are installing a new battery in your car. Although there are two terminals on the battery you hook up only  one of your car’s battery cables to the battery. Hooked up like this, the current that would then flow through the  headlights when turned on is A. half the current that flowed when both terminals were  present and plugged in. B. twice the current that flowed when both terminals were  present and plugged in. C. zero. D. the same as the current that flowed when both  terminals were present and plugged in. Points Earned: 0/1 Correct Answer: C Your Response: B 4. Your new toaster has two separate toasting units, each of which consumes 600 watts of power when it is in  use. When you operate one unit, a current of 5 amperes flows through the wiring in your home and the wires  waste about 1 watt of power handling that current. If you operate both toasting units at once, your toaster  consumes 1200 watts and the current flowing through the wiring in your home doubles to 10 amperes. How  much power will the wires in your home waste now? A. about 1 watt. B. about 0.5 watts. C.
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Quiz 6 - PointsAwarded PointsMissed Percentage 7 13 35% 1.

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