TB_chapter18

# TB_chapter18 - Chapter 18, Direct-Current Circuits CHAPTER...

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Chapter 18, Direct-Current Circuits C HAPTER 18 Conceptual Questions C1. Three resistors, each of different value, are used in a circuit with a power source supplying 12 volts. For which of the following resistor combinations is the total power supplied the greatest? a. all three resistors in series b. all three resistors in parallel c. two of the resistors in parallel with the third resistor in series with the parallel pair d. This cannot be found until it is known which resistor is in series with the parallel pair. C2. Kirchhoff’s rules are the junction rule and the loop rule. Which of the following statements is true? a. Both rules are based on the conservation of charge. b. Both rules are based on the conservation of energy. c. The junction rule is based on the conservation of charge, and the loop rule is based on the conservation of energy. d. The junction rule is based on the conservation of energy, and the loop rule is based on the conservation of charge. C3. Using a capacitor and two different value resistors, which of the following combinations in an RC circuit would give the greatest time constant? a. the capacitor in series with both resistors in series with each other b. the capacitor in series with both resistors in parallel with each other c. the capacitor in series with the higher value resistor d. the capacitor in series with the lower value resistor C4. Using a resistor and two different value capacitors, which of the following combinations in an RC circuit would give the greatest time constant? a. the resistor in series with both capacitors in series with each other b. the resistor in series with both capacitors in parallel with each other c. the resistor in series with the larger value capacitor d. the resistor in series with the lower value capacitor C5. In an RC circuit using two capacitors in series with two resistors, which of the following combinations would give the greatest time constant? a. both capacitors in series placed in series with both resistors in series b. both capacitors in parallel placed in series with both resistors in parallel c. both capacitors in series placed in series with both resistors in parallel 51

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Chapter 18, Direct-Current Circuits d. both capacitors in parallel placed in series with both resistors in series 18.1 Sources of emf 18.2 Resistors in Series 18.3 Resistors in Parallel 1. The two ends of a 3.0- resistor are connected to a 9.0-V battery. What is the current through the resistor? a. 27 A b. 6.3 A c. 3.0 A d. 0.33 A 2. The two ends of a 3.0- resistor are connected to a 9.0-V battery. What is the total power delivered by the battery to the circuit? a. 3.0 W b. 27 W c. 0.33 W d. 0.11 W 3. The basic function of an electromotive force in a circuit is to do which of the following? a. Convert electrical energy into some other form.
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## This note was uploaded on 01/06/2012 for the course PHYS 201 taught by Professor Coffin during the Spring '09 term at Oregon State.

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TB_chapter18 - Chapter 18, Direct-Current Circuits CHAPTER...

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