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Halliday, Resnick, and Walker, Fundamentals of Physics 10E Question Answers Chapter 27 Answers 1 (A) Equal; (B) More 2 (A)

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Halliday, Resnick, and Walker, Fundamentals of Physics 10E Question Answers Chapter 27 Answers 1 (A) Equal; (B) More 2 (A) Halliday, Resnick, and Walker, Fundamentals of Physics 10e Question Answers Chapter 27 Answers 1 (a) equal; (b) more 2 (a) no; (b) yes; (c) all tie 3 parallel, R2, R1, series 4 (a) b and d tie, then a tie of a, c, and e; (b) b, d, then a tie of a, c, and e; (c) positive x direction 5 (a) series; (b) parallel; (c) parallel 6 2.0 A 7 (a) less; (b) less; (c) more 8 (a) 3R; (b) R/3; (c) same 9 (a) parallel; (b) series 10 60 C 11 (a) same; (b) same; (c) less; (d) more 12 1, c; 2, a; 3, d; 4, b 13 (a) all tie; (b) 1, 3, 2 10/25/2018 Halliday/Resnick/Walker Fundamentals of Physics Classroom Response System Questions Chapter 27 Circuits Reading Quiz Questions 27.2.1. Which one of the following statements concerning emf is true? 27.2.1. Which one of the following statements concerning emf is true? a) Emf is the work done in moving the current from one terminal to the a) Emf is the work done in moving the current from one terminal to the other of an emf device. other of an emf device. b) Emf is the work done in moving a single charge from one terminal to the b) Emf is the work done in moving a single charge from one terminal to the other of an emf device. other of an emf device. c) Emf is the force exerted on a single charge to move it from one terminal c) Emf is the force exerted on a single charge to move it from one terminal to the other of an emf device. to the other of an emf device. d) Emf is the total charge moving from one terminal to the other of an emf d) Emf is the total charge moving from one terminal to the other of an emf device. device. e) Emf is the electromagnetic force that is exerted between the terminals of e) Emf is the electromagnetic force that is exerted between the terminals of an emf device. an emf device. 27.3.1. What is the primary difference between an ideal emf device and a 27.3.1. What is the primary difference between an ideal emf device and a real emf device? real emf device? a) The electric potential of a real emf device is limited. a) The electric potential of a real emf device is limited. b) The resistance of a real emf device is finite, but the resistance of an ideal b) The resistance of a real emf device is finite, but the resistance of an ideal emf device is assumed to be infinite. emf device is assumed to be infinite. c) A real emf device can carry an electric current, but an ideal emf device c) A real emf device can carry an electric current, but an ideal emf device does not. does not. d) A real emf device has an internal resistance, but an ideal emf device does d) A real emf device has an internal resistance, but an ideal emf device does not. not. e) A real emf device has a potential difference across its terminals, but an e) A real emf device has a potential difference across its terminals, but an ideal emf device does not. ideal emf device does not. 1 10/25/2018 27.3.2. Which one of the following units is the correct SI unit for the 27.3.2. Which one of the following units is the correct SI unit for the electromotive force (emf)? electromotive force (emf)? a) newtons (N) a) newtons (N) b) coulombs (C) b) coulombs (C) c) joules (J). c) joules (J). d) amperes (A) d) amperes (A) e) volts (V) e) volts (V) 27.3.3. The positive terminal of a battery in a minivan has an electric 27.3.3. The positive terminal of a battery in a minivan has an electric potential that is a maximum of 12 V higher than the negative potential that is a maximum of 12 V higher than the negative terminal. Complete the following sentence: When wires are terminal. Complete the following sentence: When wires are connected to the battery from the various electrical circuits within connected to the battery from the various electrical circuits within the minivan, the potential difference between the two terminals is the minivan, the potential difference between the two terminals is a) equal to 12 V. a) equal to 12 V. b) less than 12 V. b) less than 12 V. c) greater than 12 V. c) greater than 12 V. d) equal to zero V. d) equal to zero V. 27.3.4. Which one of the following terms describes the resistance that 27.3.4. Which one of the following terms describes the resistance that a battery (or other emf device) has in a circuit? a battery (or other emf device) has in a circuit? a) super resistance a) super resistance b) critical resistance b) critical resistance c) internal resistance c) internal resistance d) terminal resistance d) terminal resistance e) electroresistance e) electroresistance 2 10/25/2018 27.4.1. In analyzing electric circuits containing a battery and at least 27.4.1. In analyzing electric circuits containing a battery and at least one resistor, what is the change in potential across a resistor as one one resistor, what is the change in potential across a resistor as one moves through it in the direction of the current? moves through it in the direction of the current? a) +i2R a) +i2R b) −i2R b) −i2R c) +iR c) +iR d) −iR d) −iR e) zero e) zero 27.4.2. In analyzing electric circuits containing an ideal emf device 27.4.2. In analyzing electric circuits containing an ideal emf device that has an emf and at least one resistor, what is the change in that has an emf and at least one resistor, what is the change in potential across the emf device as one moves through it in the potential across the emf device as one moves through it in the direction of the emf arrow? direction of the emf arrow? a) + a) + b) − b) − c) + / R c) + / R d) − / R d) − / R e) zero e) zero 27.4.3. Complete the following statement: Around any closed-circuit 27.4.3. Complete the following statement: Around any closed-circuit loop, the sum of the potential drops loop, the sum of the potential drops a) dramatically with the addition of each resistor. a) dramatically with the addition of each resistor. b) in each loop is the same. b) in each loop is the same. c) equals the sum of the potential rises. c) equals the sum of the potential rises. d) equals the emf of the battery. d) equals the emf of the battery. e) increases with the addition of each resistor. e) increases with the addition of each resistor. 3 10/25/2018 27.5.1. Which one of the following statements is true concerning 27.5.1. Which one of the following statements is true concerning resistors connected in series within an electric circuit? resistors connected in series within an electric circuit? a) The potential difference across each of the resistors is the same. a) The potential difference across each of the resistors is the same. b) The current through each of the resistors is the same. b) The current through each of the resistors is the same. c) The energy dissipated by each of the resistors is the same. c) The energy dissipated by each of the resistors is the same. d) The resistance of each of the resistors is the same. d) The resistance of each of the resistors is the same. e) The resistivity of each of the resistors is the same. e) The resistivity of each of the resistors is the same. 27.5.2. Two identical resistors are connected in series across the 27.5.2. Two identical resistors are connected in series across the terminals of a battery with a voltage V and a current i flows terminals of a battery with a voltage V and a current i flows through the circuit. If one of the resistors is removed from the through the circuit. If one of the resistors is removed from the circuit and the remaining one connected across the terminals of the circuit and the remaining one connected across the terminals of the battery, how much current would flow through the circuit? battery, how much current would flow through the circuit? a) 4i a) 4i b) 2i b) 2i c) i c) i d) i/2 d) i/2 e) i/4 e) i/4 27.5.3. One end of resistor A is connected to the positive terminal of a 27.5.3. One end of resistor A is connected to the positive terminal of a battery and the other end is connected to resistor B. The opposite battery and the other end is connected to resistor B. The opposite end of resistor B is connected to the negative terminal of the end of resistor B is connected to the negative terminal of the battery. If resistor A has resistance R and B has a resistance 2R, battery. If resistor A has resistance R and B has a resistance 2R, what is the equivalent resistance of this circuit? what is the equivalent resistance of this circuit? a) R a) R b) 3R/2 b) 3R/2 c) 2R c) 2R d) 2R/3 d) 2R/3 e) 3R e) 3R 4 10/25/2018 27.6.1.
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