College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 22, Problem 2CQ
To determine
Whether inductance in hair dryer can increase or decrease the value of
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A 6.0 V battery has been connected to an LR circuit for sufficient time so that a steady current flows through the resistor R=2.2kΩ and inductor L=18mH. At t=0, the battery is removed from the circuit and the current decays exponentially through R. Write the equation for the emf across the inductor as a function of time t. At what time is the emf greatest? What is this maximum value (V)?
A 6.0 V battery has been connected to an LR circuit for sufficient time so that a steady current flows through the resistor R=2.2kΩ and inductor L=18mH. At t=0, the battery is removed from the circuit and the current decays exponentially through R. Write the equation for the emf across the inductor as a function of time t. At what time is the emf greatest?
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Chapter 22 Solutions
College Physics (10th Edition)
Ch. 22 - For a series ac R-L-C circuit, (a) why do the...Ch. 22 - Prob. 2CQCh. 22 - Prob. 3CQCh. 22 - At high frequencies, a capacitor becomes a short...Ch. 22 - Prob. 5CQCh. 22 - The current in an ac power line changes direction...Ch. 22 - Electric-power companies like to have their power...Ch. 22 - Prob. 8CQCh. 22 - When a series-resonant circuit is connected across...Ch. 22 - Is it possible for the power factor of an R-L-C ac...
Ch. 22 - During the last quarter of the 19th century, there...Ch. 22 - In an ac circuit, why is the average power...Ch. 22 - A piece of electrical equipment in an ac circuit...Ch. 22 - A light bulb is the resistance in a series R-L-C...Ch. 22 - A series R-L-C ac circuit with a sinusoidal...Ch. 22 - In a series R-L-C circuit powered by an ac...Ch. 22 - In a series R-L-C circuit powered by an ac...Ch. 22 - In a series R-L-C circuit powered by an ac...Ch. 22 - A series circuit contains an inductor, a resistor,...Ch. 22 - Prob. 8MCPCh. 22 - If the root-mean-square currant in an ac circuit...Ch. 22 - In a series R-L-C circuit, the voltage source...Ch. 22 - In an R-L-C ac series circuit, if the resistance...Ch. 22 - In a series R-L-C ac circuit at resonance, A. the...Ch. 22 - Prob. 1PCh. 22 - An electric motor is being powered with a voltage...Ch. 22 - A capacitance C and an inductance L are operated...Ch. 22 - the angular frequency in part (a), and what is the...Ch. 22 - Circuit design. You are designing an amplifier...Ch. 22 - A 2.20F capacitor is connected across an ac source...Ch. 22 - The voltage amplitude of an ac source is 25.0 V,...Ch. 22 - Find the current amplitude if the self-inductance...Ch. 22 - A sinusoidal ac voltage source in a circuit...Ch. 22 - A 65 resistor, an 8.0 F capacitor, and a 35 mH...Ch. 22 - In an R-L-C series circuit, the rms voltage across...Ch. 22 - A 1500 resistor is connected in series with a 350...Ch. 22 - (a) Compute the impedance of a series R-L-C...Ch. 22 - A 200 resistor is in series with a 0.100 H...Ch. 22 - A hair dryer is designed to produce 1200 W of...Ch. 22 - A series R-L-C circuit is connected to a 120 Hz ac...Ch. 22 - The circuit in Problem 13 carries an rms current...Ch. 22 - A series ac circuit contains a 250 resistor, a 15...Ch. 22 - An ac series R-L-C circuit contains a 120 w...Ch. 22 - (a) At what angular frequency will a 5.00 F...Ch. 22 - In an R-L-C series circuit, R = 150 , L = 0.750 H,...Ch. 22 - You need to make a series ac circuit having a...Ch. 22 - A series circuit consists of an ac source of...Ch. 22 - In a series R-L-C circuit, R = 400 , L = 0.350 H,...Ch. 22 - In a series R-L-C circuit, L = 0.200 H, C = 80.0...Ch. 22 - In an R-L-C series circuit, R = 300 , L = 0.400 H,...Ch. 22 - A solenoid has a resistance of 48.0 and an...Ch. 22 - A large electromagnetic coil is connected to a 120...Ch. 22 - A parallel-plate capacitor having square plates...Ch. 22 - At a frequency 1, the reactance of a certain...Ch. 22 - An electrical engineer is designing an R-L-C...Ch. 22 - Consider the circuit sketched in Figure 22.22. The...Ch. 22 - In a series R-L-C circuit, the components have the...Ch. 22 - (a) Show that for an R-L-C series circuit the...Ch. 22 - In an R-L-C series circuit, the magnitude of the...Ch. 22 - In a series R-L-C circuit, R = 300 , XC = 300 ,...Ch. 22 - In a series R-L-C circuit, the phase angle is...Ch. 22 - A 100.0 resistor, a 0.100 F capacitor, and a...Ch. 22 - Consider the same circuit as in the preceding...Ch. 22 - Converting dc to ac. An individual cell such as an...Ch. 22 - If the electrode oscillates between two points 20 ...Ch. 22 - Converting dc to ac. An individual cell such as an...Ch. 22 - Converting dc to ac. An individual cell such as an...
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- In the LC circuit in Figure 33.11, the inductance is L = 19.8 mH and the capacitance is C = 19.6 mF. At some moment, UB = UE= 17.5 mJ. a. What is the maximum charge stored by the capacitor? b. What is the maximum current in the circuit? c. At t = 0, the capacitor is fully charged. Write an expression for the charge stored by the capacitor as a function of lime. d. Write an expression for the current as a function of time.arrow_forwardAn electric current contains a battery that produces a voltage of 60 voltsV , a resistor with a resistance of 13 ohms, and inductor with an inductance of 5 henrys H . Using calculus, it can be shown that I I t (in amperes, A), when t seconds after the switch is closed is 13 5 60 1 13 t I e 1.4.1 Use this equation to express the time t as function of the currentI arrow_forwardAn LC circuit contains a 20 mH inductor and a 50 µF capacitor with an initial charge of 10 mC. The resistance of the circuit is negligible. Let the instant the circuit is closed be t = 0.(a) What is the total energy stored initially? Is it conserved during LC oscillations?(b) What is the natural frequency of the circuit?(c) At what time is the energy stored(i) completely electrical (i.e., stored in the capacitor)? (ii) completely magnetic (i.e., stored in the inductor)?(d) At what times is the total energy shared equally between the inductor and the capacitor?(e) If a resistor is inserted in the circuit, how much energy iseventually dissipated as heat?arrow_forward
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