College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 26, Problem 3CQ
Most battery-powered devices won’t work if you put the battery in backward. But for a device that you plug in, you can often reverse the orientation of the plug with no problem. Explain the difference.
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Most battery-powered devices won’t work if you put the battery in backward. But for a device that you plug in, you can often reverse the orientation of the plug with no problem. Explain the difference.
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Chapter 26 Solutions
College Physics: A Strategic Approach (3rd Edition)
Ch. 26 - Identical resistors are connected to separate 12 V...Ch. 26 - Consider the three circuits in Figure Q26.2. Rank...Ch. 26 - Most battery-powered devices wont work if you put...Ch. 26 - If a lightbulb is connected to a 120 V, 60 Hz...Ch. 26 - A soldering gun contains a transformer that lowers...Ch. 26 - A 12 V DC power supply is connected to the primary...Ch. 26 - Figure Q26.7 shows three wires wrapped around an...Ch. 26 - Women usually have higher resistance of their arms...Ch. 26 - If you work out enough to visibly increase the...Ch. 26 - The peak current through a capacitor is 2.0 A....
Ch. 26 - Consider the four circuits in Figure Q26.14. Rank...Ch. 26 - Prob. 15CQCh. 26 - Prob. 16CQCh. 26 - Figure Q26.17 shows two inductors and the...Ch. 26 - The peak current passing through an inductor is...Ch. 26 - Consider the four circuits in Figure Q26.19. Rank...Ch. 26 - The tuning circuit in a radio uses an RLC circuit....Ch. 26 - The resonance frequency of a driven RLC circuit is...Ch. 26 - Consider the four circuits in Figure Q26.22. They...Ch. 26 - Prob. 23MCQCh. 26 - An inductor is connected to an AC generator. As...Ch. 26 - A capacitor is connected to an AC generator. As...Ch. 26 - An AC source is connected to a series combination...Ch. 26 - An AC source is connected to a series combination...Ch. 26 - The circuit shown in Figure Q26.28 has a resonance...Ch. 26 - At resonance, a driven RLC circuit has VC = 5.0 V,...Ch. 26 - A driven RLC circuit has VC = 5.0V, VR = 7.0 V,...Ch. 26 - A 200 resistor is connected to an AC source with...Ch. 26 - Figure P26.2 shows voltage and current graphs for...Ch. 26 - A resistor dissipates 2.00 W when the rms voltage...Ch. 26 - The heating element of a hair dryer dissipates...Ch. 26 - A toaster oven is rated at 1600 W for operation at...Ch. 26 - A small electric space heater uses a wire that has...Ch. 26 - A generator produces 40 MW of power and sends it...Ch. 26 - Soles of hoots that are designed to protect...Ch. 26 - The primary coil of a transformer is connected to...Ch. 26 - A soldering iron uses an electric current in a...Ch. 26 - A power pack charging a cell phone battery has an...Ch. 26 - A neon sign transformer has a 450 W AC output with...Ch. 26 - Prob. 13PCh. 26 - A science hobbyist has purchased a surplus...Ch. 26 - A generator produces 250 kW of electric power at...Ch. 26 - In an old house, the wires leading lo a 120 V...Ch. 26 - A typical American family uses 1000 kWh of...Ch. 26 - The wiring in the wall of your house to and from...Ch. 26 - The following appliances are connected to a single...Ch. 26 - Your refrigerator uses 220 W when the compressor...Ch. 26 - A 60 W (120 V) night light is turned on for an...Ch. 26 - Suppose you leave a 110 W television and two 100 W...Ch. 26 - The manufacturer of an electric table saw claims...Ch. 26 - John is changing a lightbulb in a lamp, Its a warm...Ch. 26 - In some countries AC outlets near bathtubs are...Ch. 26 - If you touch the terminal of a battery, the small...Ch. 26 - A person standing barefoot on the ground 20 m from...Ch. 26 - Electrodes used to make electrical measurements of...Ch. 26 - A fisherman has netted a torpedo ray. As he picks...Ch. 26 - Problems 30 and 31 concern a high-voltage...Ch. 26 - Problems 30 and 31 concern a high-voltage...Ch. 26 - A 0.30 F capacitor is connected across an AC...Ch. 26 - A 20 F capacitor is connected across an AC...Ch. 26 - The peak current through a capacitor is 10.0 mA....Ch. 26 - A 20 nF capacitor is connected across an AC...Ch. 26 - A capacitor is connected to a 15 kHz oscillator...Ch. 26 - The peak current through a capacitor is 8.0 mA...Ch. 26 - Prob. 38PCh. 26 - A 20 mH inductor is connected across an AC...Ch. 26 - The peak current through an inductor is 10.0 mA....Ch. 26 - A 500 H inductor is connected across an AC...Ch. 26 - An inductor is connected to a 15 kHz oscillator...Ch. 26 - The peak current through an inductor is 12.5 mA...Ch. 26 - A 2.0 mH inductor is connected in parallel with a...Ch. 26 - An FM radio station broadcasts at a frequency of...Ch. 26 - The inductor in the RLC tuning circuit of an AM...Ch. 26 - At what frequency f do a 1.0 F capacitor and a 1.0...Ch. 26 - What capacitor in series with a 100 resistor and...Ch. 26 - What inductor in series with a 100 resistor and a...Ch. 26 - A series RLC circuit has a 200 kHz resonance...Ch. 26 - An RLC circuit with a 10 F capacitor is connected...Ch. 26 - A series KLC circuit consists of a 280 resistor,...Ch. 26 - Electric outlets in England are 230 V. Alice...Ch. 26 - The voltage-to-current ratio in the primary coil...Ch. 26 - A 15-km-long, 230 kV aluminum transmission line...Ch. 26 - The voltage across a 60 F capacitor is described...Ch. 26 - Prob. 57GPCh. 26 - An electronics hobbyist is building a radio set to...Ch. 26 - For the circuit of Figure P26.59 a. What is the...Ch. 26 - For the circuit of Figure P26.60 a. What is the...Ch. 26 - An RLC circuit consists of a 48 resistor, a 200 F...Ch. 26 - Cell Membrane Resistance The capacitance of...Ch. 26 - Cell Membrane Resistance The capacitance of...Ch. 26 - Cell Membrane Resistance The capacitance of...Ch. 26 - Cell Membrane Resistance The capacitance of...Ch. 26 - Halogen Bulbs Halogen bulbs have some differences...Ch. 26 - Halogen Bulbs Halogen bulbs have some differences...Ch. 26 - Halogen Bulbs Halogen bulbs have some differences...Ch. 26 - Halogen Bulbs Halogen bulbs have some differences...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- According to its design specification, the timer circuit delaying the closing of an elevator door is to have a capacitance of 32.0 F between two points A and B. When one circuit is being constructed, the inexpensive but durable capacitor installed between these two points is found to have capacitance 34.8 F. To meet the specification, one additional capacitor can be placed between the two points. (a) Should it be in series or in parallel with the 34.8-F capacitor? (b) What should be its capacitance? (c) What If? The next circuit comes down the assembly line with capacitance 29.8 F between A and B. To meet the specification, what additional capacitor should be installed in series or in parallel in that circuit?arrow_forwardThe immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls Clear! and pushes a button on one paddle to discharge the capacitor through the patient's chest Assume an energy of 3.00 102 W s is to be delivered from a 30.0-F capacitor. To what potential difference must it be charged?arrow_forwardConsider the circuit shown in Figure P20.52, where C1 = 6.00 F, C2 = 3.00 F, and V = 20.0 V. Capacitor C1 is first charged by closing switch S1. Switch S1 is then opened, and the charged capacitor is connected to the uncharged capacitor by closing S2. Calculate (a) the initial charge acquired by C1 and (b) the final charge on each capacitor. Figure P20.52arrow_forward
- The immediate cause of many deaths is ventricular fibrillation, which is an uncoordinated quivering of the heart. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart sometimes resumes its proper beating. One type of defibrillator (chapter-opening photo, page 777) applies a strong electric shock to the chest over a time interval of a few milliseconds. This device contains a capacitor of several microfarads, charged to several thousand volts. Electrodes called paddles are held against the chest on both sides of tire heart, and the capacitor is discharged through the patient's chest. Assume an energy of 300 J is to be delivered from a 30.0-F capacitor. To what potential difference must it be charged?arrow_forwardAccording to UE=12C(V)2 (Eq. 27.3), a greater capacitance means more energy is stored by the capacitor, but according to UE = Q2/2C (Eq. 27.2), a greater capacitance means less energy is stored. How can both of these equations be correct?arrow_forwardA variable air capacitor used in a radio tuning circuit is made of N semicircular plates, each of radius R and positioned a distance d from its neighbors, to which it is electrically connected. As shown in Figure P20.38, a second identical set of plates is enmeshed with the first set. Each plate in the second set is halfway between two plates of the first set. The second set can rotate as a unit. Determine the capacitance as a function of the angle of rotation , where = 0 corresponds to the maximum capacitance. Figure P20.38arrow_forward
- Consider the circuit shown in Figure P26.24, where C1, = 6.00 F, C2 = 3.00 F. and V = 20.0 V. Capacitor C1 is first charged by closing switch S1. Switch S1 is then opened, and the charged capacitor is connected to the uncharged capacitor by closing Calculate (a) the initial charge acquired by C, and (b) the final charge on each capacitor.arrow_forwardThe circuit shown in Figure P28.78 is set up in the laboratory to measure an unknown capacitance C in series with a resistance R = 10.0 M powered by a battery whose emf is 6.19 V. The data given in the table are the measured voltages across the capacitor as a function of lime, where t = 0 represents the instant at which the switch is thrown to position b. (a) Construct a graph of In (/v) versus I and perform a linear least-squares fit to the data, (b) From the slope of your graph, obtain a value for the time constant of the circuit and a value for the capacitance. v(V) t(s) In (/v) 6.19 0 5.56 4.87 4.93 11.1 4.34 19.4 3.72 30.8 3.09 46.6 2.47 67.3 1.83 102.2arrow_forwardThe temperature near the center of the Sun is thought to be 15 million degrees Celsius ( 1.5107oC ) (or kelvin). Through what voltage must a singly charged ion be accelerated to have the same energy as the average kinetic energy of ions at this temperature?arrow_forward
- A 10.0-F capacitor is charged to 15.0 V. It is next connected in series with an uncharged 5.00-F capacitor. The series combination is finally connected across a 50.0-V battery as diagrammed in Figure P26.63. Find the new potential differences across the 5.00-F and 10.0-F capacitors after the switch is thrown closed.arrow_forward(a) What is the potential difference going from point a to point b in Figure 21.47? (b) What is the potential difference going from c to b? (c) From e to g? (d) From e to d?arrow_forwardWhen discharging a capacitor, as discussed in conjunction with Figure 21.39, how long does it take for the voltage on the capacitor to reach zero? Is this a problem?arrow_forward
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