1bb-quiz3_000

1bb-quiz3_000 - B 0.042 m/s C 0.067 m/s D 0.11 m/s 5 A...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The resistors in the circuit shown each have a resistance of 900 W . What is the equivalent resistance of the circuit? A) 3600 W B) 1800 W C) 900 W D) 225 W 2) A 2.0-m length of gold wire is connected to a 1.5-V battery, and a current of 9.0 mA flows through it. What is the diameter of the wire? The resistivity of gold is 2.24 x 10 -8 W œ m.) A) 18.6 m m B) 4.5 x 10 -11 m C) 8.6 m m D) 54 mm 3) In a certain electroplating process gold is deposited by using a current of 10 A for 15 minutes. An Au + ion has a mass of approximately 3.3 x 10 -22 g. How many grams of gold are deposited in this process? A) 12.3 B) 14.3 C) 18.6 D) 46.5 E) 9.20 4) The density of conduction electrons in aluminum is 2.1 x 10 29 m -3 . What is the drift velocity in an aluminum conductor that has a 3.0 m m by 4.0 m m rectangular cross section and when a 27.0-mA current flows through the conductor? A) 0.18 m/s
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Unformatted text preview: B) 0.042 m/s C) 0.067 m/s D) 0.11 m/s 5) A rechargeable battery that is completely drained of electrical energy can be completely charged by applying 4.0 mA of current for 1.0 h. If the battery acquires an emf of 2.0 V in the process of being charged, how much energy is the battery capable of storing? A) 29 J B) 8.0 mJ C) 2.2 m J D) 0.50 kJ Figure 27.7 6) In Figure 27.7, what is the power dissipated in the 2 ohm resistance in the circuit ? A) 5.33 W B) 3.56 W C) 2.67 W D) 8.0 W E) 6.67 W 1 Figure 27.9 Initially, for the circuit shown, the switch S is open and the capacitor is uncharged. The switch S is closed at time t = 0. 7) In Figure 27.9, at a given instant, the potential difference across the capacitor is twice the potential difference across the resistor. At that instant, the charge on the capacitor, in m C, is closest to: A) 1200 B) 1400 C) 1800 D) 2000 E) 1600 2 Answer Key Testname: 1BB-QUIZ3 1) C 2) A 3) C 4) C 5) A 6) B 7) D 3...
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1bb-quiz3_000 - B 0.042 m/s C 0.067 m/s D 0.11 m/s 5 A...

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