College Physics (10th Edition)
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 1CQ

For a series ac R-L-C circuit, (a) why do the voltage amplitudes not obey the equation V = VR + VL + VC; and (b) would the instantaneous voltages obey the equation U = UR+ UL + UC? Why or why not?

(a)

Expert Solution
Check Mark
To determine

The reason for which the voltage amplitude in a series RLC circuit do not follow the equation V=VR+VL+VC.

Answer to Problem 1CQ

The voltage amplitude in a series RLC circuit do not follow the equation V=VR+VL+VC since the individual voltages achieve their maximum values at different times.

Explanation of Solution

A series RLC circuit is an oscillating circuit. The current and voltage in the circuit oscillates in time with maintaining phase difference between them. Moreover, there exist phase difference in voltage across the inductor and that across the capacitor.

Since there exist phase difference between the voltages across the components resistor, inductor, and capacitor, the maximum value of the voltages across different components will present at different time. This makes the direct addition of the voltages across the components do not give the maximum voltage amplitude.

(b)

Expert Solution
Check Mark
To determine

Whether the instantaneous voltages in the series RLC circuit obey the equation U=UR+UL+UC or not.

Answer to Problem 1CQ

The instantaneous voltages in the series RLC circuit obeys the equation U=UR+UL+UC in accordance with the Kirchhoff’s loop rule.

Explanation of Solution

According to the Kirchhoff’s loop rule, the algebraic sum of all voltages in a loop must be zero. In other words, the net voltage in a loop will be zero. Applying the Kirchhoff’s loop rule to a series RLC circuit, at any instant the total potential difference across the circuit will be equal to the sum of the individual voltages across the three components.

The Kirchhoff’s loop rule is agreed by the series RLC circuit when the instantaneous voltages obey the equation U=UR+UL+UC. Here, the sum of the instantaneous voltages will not be the peak voltage amplitude of the circuit. Therefore, the instantaneous voltages in the series RLC circuit obeys the equation U=UR+UL+UC in accordance with the Kirchhoff’s loop rule

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Chapter 22 Solutions

College Physics (10th Edition)

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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