Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Textbook Question
Chapter 33, Problem 33.65AP
A transformer may be used to provide maximum power transfer between two AC circuits that have different impedances Z1 and Z2. This process is called impedance matching. (a) Show that the ratio of turns N1/N2 for this transformer is
(b) Suppose you want to use a transformer as an impedance-matching device between an audio amplifier that has an output impedance of 8.00 kΩ and a speaker that has an input impedance of 8.00 Ω. What should your N1/N2 ratio be?
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Chapter 33 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
Ch. 33 - Consider the voltage phasor in Figure 32.4, shown...Ch. 33 - Consider the AC circuit in Figure 32.8. The...Ch. 33 - Consider the AC circuit in Figure 32.11. The...Ch. 33 - Consider the AC circuit in Figure 32.12. The...Ch. 33 - Label each part of Figure 32.16, (a), (b), and...Ch. 33 - An AC source drives an RLC circuit with a fixed...Ch. 33 - What is the impedance of a series RLC circuit at...Ch. 33 - An inductor and a resistor are connected in series...Ch. 33 - (i) When a particular inductor is connected to a...Ch. 33 - A capacitor and a resistor are connected in series...
Ch. 33 - Prob. 33.4OQCh. 33 - Prob. 33.5OQCh. 33 - A sinusoidally varying potential difference has...Ch. 33 - A series RLCcircuit contains a 20.0- resistor, a...Ch. 33 - A resistor, a capacitor, and an inductor are...Ch. 33 - (a) Why does a capacitor act as a short circuit at...Ch. 33 - What is the plia.se angle in a series RLC circuit...Ch. 33 - Prob. 33.11OQCh. 33 - A 6.00-V battery is connected across the primary...Ch. 33 - Do AC ammeters and voltmeters read (a)...Ch. 33 - (a) Explain how the quality factor is related to...Ch. 33 - (a) Explain how the mnemonic ELI the ICE man can...Ch. 33 - Why is the sum of the maximum voltages across each...Ch. 33 - (a) Does the phase angle in an RLC series circuit...Ch. 33 - Prob. 33.5CQCh. 33 - As shown in Figure CQ33.6, a person pulls a vacuum...Ch. 33 - Prob. 33.7CQCh. 33 - Will a transformer operate if a battery is used...Ch. 33 - Prob. 33.9CQCh. 33 - Prob. 33.10CQCh. 33 - When an AC source is connected across a 12.0-...Ch. 33 - (a) What is the resistance of a lightbulb that...Ch. 33 - An AC power supply produces a maximum voltage Vmax...Ch. 33 - A certain lightbulb is rated at 60.0 W when...Ch. 33 - The current in the circuit shown in Figure P32.3...Ch. 33 - In the AC circuit shown in Figure P32.3, R = 70.0 ...Ch. 33 - An audio amplifier, represented by the AC I source...Ch. 33 - Figure P32.4 shows three lightbulbs connected to a...Ch. 33 - An inductor has a .54.0- reactance when connected...Ch. 33 - In a purely inductive AC circuit as shown in...Ch. 33 - Prob. 33.11PCh. 33 - An inductor is connected to an AC power supply...Ch. 33 - An AC source has an output rms voltage of 78.0 V...Ch. 33 - A 20.0-mH inductor is connected to a North...Ch. 33 - Review. Determine the maximum magnetic flux...Ch. 33 - The output voltage of an AC source is given by v =...Ch. 33 - A 1.00-mF capacitor is connected to a North...Ch. 33 - An AC source with an output rms voltage of 86.0 V...Ch. 33 - (a) For what frequencies does a 22.0-F capacitor...Ch. 33 - A source delivers an AC voltage of the form =...Ch. 33 - What maximum current is delivered by an AC source...Ch. 33 - A capacitor C is connected to a power supply that...Ch. 33 - What is the maximum current in a 2.20-F capacitor...Ch. 33 - An AC source with Vmax = 150 V and f = 50.0 Hz is...Ch. 33 - In addition to phasor diagrams showing voltages...Ch. 33 - A sinusoidal voltage = 40.0 sin 100t, where is...Ch. 33 - A series AC circuit contains a resistor, an...Ch. 33 - At what frequency does the inductive reactance of...Ch. 33 - An RLC circuit consists of a 150- resistor, a...Ch. 33 - Prob. 33.30PCh. 33 - An inductor (L = 400 mH), a capacitor (C = 4.43...Ch. 33 - A 60.0-ft resistor is connected in series with a...Ch. 33 - Review. In an RLC series circuit that includes a...Ch. 33 - Prob. 33.34PCh. 33 - A series RLC circuit has a resistance of 45.0 and...Ch. 33 - An AC voltage of the form = 100 sin 1 000t, where...Ch. 33 - A series RLC circuit has a resistance of 22.0 and...Ch. 33 - An AC voltage of the form v = 90.0 sin 350t, where...Ch. 33 - ln a certain series RLC circuit, Irms = 9.00 A,...Ch. 33 - Prob. 33.40PCh. 33 - Prob. 33.41PCh. 33 - A series RLC circuit has components with the...Ch. 33 - An RLC circuit is used in a radio to tune into an...Ch. 33 - The LC circuit of a radar transmitter oscillates...Ch. 33 - A 10.0- resistor, 10.0-mH inductor, and 100-F...Ch. 33 - A resistor R, inductor L, and capacitor C are...Ch. 33 - Review. A radar transmitter contains an LC circuit...Ch. 33 - A step-down transformer is used for recharging the...Ch. 33 - The primary coil of a transformer has N1 = 350...Ch. 33 - A transmission line that has a resistance per unit...Ch. 33 - In the transformer shown in Figure P33.51, the...Ch. 33 - A person is working near the secondary of a...Ch. 33 - The RC high-pass filter shown in Figure P33.53 has...Ch. 33 - Consider the RC high-pass filler circuit shown in...Ch. 33 - Prob. 33.55PCh. 33 - Consider the Filter circuit shown in Figure...Ch. 33 - A step-up transformer is designed to have an...Ch. 33 - Prob. 33.58APCh. 33 - Review. The voltage phasor diagram for a certain...Ch. 33 - Prob. 33.60APCh. 33 - Energy is to be transmitted over a pair of copper...Ch. 33 - Energy is to be transmitted over a pair of copper...Ch. 33 - A 400- resistor, an inductor, and a capacitor are...Ch. 33 - Show that the rms value for the sawtooth voltage...Ch. 33 - A transformer may be used to provide maximum power...Ch. 33 - A capacitor, a coil, and two resistors of equal...Ch. 33 - Marie Cornu, a physicist at the Polytechnic...Ch. 33 - A series RLC circuit has resonance angular...Ch. 33 - Review. One insulated conductor from a household...Ch. 33 - (a) Sketch a graph of the phase angle for an RLC...Ch. 33 - In Figure P33.71, find the rms current delivered...Ch. 33 - Review. In the circuit shown in Figure P32.44,...Ch. 33 - Prob. 33.73APCh. 33 - A series RLC circuit is operating at 2.00 103 Hz....Ch. 33 - A series RLC circuit consists of an 8.00-...Ch. 33 - A series RLC circuit in which R = l.00 , L = 1.00...Ch. 33 - The resistor in Figure P32.49 represents the...Ch. 33 - An 80.0- resistor and a 200-mH inductor are...Ch. 33 - Prob. 33.79CPCh. 33 - P33.80a shows a parallel RLC circuit. The...Ch. 33 - Prob. 33.81CP
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- An ac source of voltage amplitude 10 V delivers electric energy at a rate of 0.80 W when its current output is 2.5 A. What is the phase angle between the emf and the current?arrow_forwardIn a purely inductive AC circuit as shown in Figure P21.15, Vmax = 100. V. (a) The maximum current is 7.50 A at 50.0 Hz. Calculate the inductance L. (b) At what angular frequency is the maximum current 2.50A? Figure p21.15arrow_forwardAn AC generator with an rms emf of 15.0 V is connected in series with a 0.54-H inductor. The frequency of the source emf is 70.0 Hz. Draw a phasor diagram for this circuit, including the current, the potential difference across the inductor, and the source emf. Draw your diagram with the current phasor pointing toward the right along the horizontal axis.arrow_forward
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