EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 24, Problem 1CQ
Why is the current in an ac circuit not always in phase with its voltage?
Expert Solution & Answer
To determine
The reason for the current in an ac circuit is not in phase with its voltage.
Answer to Problem 1CQ
The current in an ac circuit is not in phase with its voltage because of the reactance of the passive elements of an ac circuit.
Explanation of Solution
The ac voltage is varied sinusoidal over time where as a dc voltage is not varied.
Since resistance is not dependent on frequency, current and voltage are in phase for a resistor. But in the passive elements like inductors and capacitors, the resistance is called as the reactance because it depends on the frequency.
This reactance tells about the relationship between the voltage and current in an ac circuit. In an inductor the current lags the voltage and in a capacitor the current leads the voltage.
When the capacitive reactance is greater than the inductive reactance in the LC circuit then the current leads the voltage. Similarly the inductive reactance is greater than the capacitive reactance then the current lags the voltage.
So the current lead or lag the voltage in the ac circuit.
Conclusion:
Therefore, the current in an ac circuit is not in phase with its voltage because of the reactance of the passive elements of an ac circuit.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Can someone help
Can someone help me
3. Four identical small masses are connected in a
flat perfect square. Rank the relative rotational
inertias (IA, IB, IC) about the three axes of
rotation shown. Axes A and B are in the plane of
the square, and axis C is perpendicular to the
plane, through mass m1.
ΙΑ
IB
m2
m1
m3
Ic
m4
(a) IA
Chapter 24 Solutions
EBK PHYSICS
Ch. 24.1 - A circuit has a sinusoidally varying current whose...Ch. 24.2 - Circuit 1 has a capacitor with a capacitance C and...Ch. 24.3 - The two circuits shown in Figure 24-14 have...Ch. 24.4 - A circuit consists of an ac generator and an...Ch. 24.5 - Prob. 5EYUCh. 24.6 - An RLC circuit has a resonance frequency of 60 Hz....Ch. 24 - Why is the current in an ac circuit not always in...Ch. 24 - An LC circuit is driven at a frequency higher than...Ch. 24 - An LC circuit is driven at a frequency lower than...Ch. 24 - Prob. 4CQ
Ch. 24 - Prob. 5CQCh. 24 - Two RLC circuits have different values of L and C....Ch. 24 - Can an RLC circuit have the same impedance at two...Ch. 24 - An ac generator produces a peak voltage of 75 V....Ch. 24 - In many European homes the rms voltage available...Ch. 24 - An rms voltage of 120 V produces a maximum current...Ch. 24 - The rms current in an ac circuit with a resistance...Ch. 24 - A 3.33-k resistor is connected to a generator with...Ch. 24 - A 75-watt lightbulb uses an average power of 75 W...Ch. 24 - Inverter Efficiency An array of solar panels...Ch. 24 - Prob. 8PCECh. 24 - The reactance of a capacitor is 65 at a frequency...Ch. 24 - The capacitive reactance of a capacitor at 60 0 Hz...Ch. 24 - A 105-F capacitor is connected to an ac generator...Ch. 24 - The rms voltage across a 0.010-F capacitor is 2.8...Ch. 24 - Predict/Calculate The rms current through a 55.5-F...Ch. 24 - The maximum current in a 22-F capacitor connected...Ch. 24 - PredicCalculate An rms voltage of 20 5 V with a...Ch. 24 - A circuit consists of a 2.00-kHz generator and a...Ch. 24 - A 0.22-F capacitor is connected to an ac generator...Ch. 24 - At what frequency will a generator with an rms...Ch. 24 - PredicCalculate A 22 0-Fcapacitor is connected to...Ch. 24 - Find the impedance of a 60 0-Hz circuit with a...Ch. 24 - An ac generator with a frequency of 125 Hz and an...Ch. 24 - The rms current in an RC circuit is 0.72 A. The...Ch. 24 - When an ac generator with a frequency of 180 Hz...Ch. 24 - A 50 0-Hz generator with an rms voltage of 115 V...Ch. 24 - (a) At what frequency must the circuit in Problem...Ch. 24 - Find the power factor for an RC circuit connected...Ch. 24 - Predict/Calculate (a) Determine the power factor...Ch. 24 - Square-Wave Voltage II The square-wave voltage...Ch. 24 - Prob. 29PCECh. 24 - An inductor has a reactance of 56 5 at 85 0 Hz....Ch. 24 - What is the rms current in a 97 5-mH inductor when...Ch. 24 - What rms voltage is required to produce an rms...Ch. 24 - Loudspeaker Impedance A loudspeakers impedance is...Ch. 24 - Prob. 34PCECh. 24 - A 525- resistor and a 295-mH inductor are...Ch. 24 - The rms current in an RL circuit is 0 26 A when it...Ch. 24 - An ac generator with a frequency of 1 55 kHz and...Ch. 24 - Predict/Calculate An rms voltage of 22 2 V with a...Ch. 24 - A 0.22-H inductor is connected to an ac generator...Ch. 24 - The phase angle in a certain RL circuit is 68 at a...Ch. 24 - (a) Sketch the phasor diagram for an ac circuit...Ch. 24 - A large air conditioner has a resistance of 7 0 ...Ch. 24 - Prob. 43PCECh. 24 - Prob. 44PCECh. 24 - Prob. 45PCECh. 24 - Predict/Explain (a) When the ac generator in...Ch. 24 - Prob. 47PCECh. 24 - Predict/Explain (a) When the ac generator in...Ch. 24 - Find the rms voltage across each element in an RLC...Ch. 24 - What is the impedance of a 1 50-kQ resistor, a...Ch. 24 - Consider the circuit shown in Figure 24-34 The ac...Ch. 24 - What is the phase angle in an RLC circuit with R =...Ch. 24 - An ac voltmeter, which displays the rms voltage...Ch. 24 - Prob. 54PCECh. 24 - (a) Sketch the phasor diagram for an ac circuit...Ch. 24 - A generator connected to an RLC circuit has an rms...Ch. 24 - Prob. 57PCECh. 24 - Predict/Explain In an RLC circuit a second...Ch. 24 - An RLC circuit has a resonance frequency of 1 9...Ch. 24 - The Magnetron A magnetron in a kitchen microwave...Ch. 24 - At resonance, the rms current in an RLC circuit is...Ch. 24 - The resistance in an RLC circuit is doubled (a)...Ch. 24 - Predict/Calculate The capacitive reactance in an...Ch. 24 - Predict/Calculate The capacitive reactance in an...Ch. 24 - A 115- resistor, a 67 6-mH inductor, and a 189-F...Ch. 24 - (a) Find the frequency at which an 18-F capacitor...Ch. 24 - Consider an RLC circuit with R = 105 , L- 518 mH,...Ch. 24 - Predict/Calculate An RLC circuit has a resonance...Ch. 24 - An RLC circuit has a capacitance of 0 29 F. (a)...Ch. 24 - CE BIO Persistence of Vision Although an...Ch. 24 - CE An RLC circuit is driven at its resonance...Ch. 24 - CE Predict/Explain Suppose the circuits shown in...Ch. 24 - Prob. 73GPCh. 24 - Prob. 74GPCh. 24 - A 4 40-F and an 8.80-F capacitor are connected in...Ch. 24 - A 4.40-F and an 8.80-F capacitor are connected in...Ch. 24 - A 12.5-F capacitor and a 47.5-F capacitor are...Ch. 24 - CE A generator drives an RLC circuit with the...Ch. 24 - Trapped on a deserted island, you salvage some...Ch. 24 - Predict/Calculate When a certain resistor is...Ch. 24 - Find the average power consumed by an RC circuit...Ch. 24 - A 1 15-k resistor and a 505-mH inductor are...Ch. 24 - Prob. 83GPCh. 24 - Predict/Calculate Figure 24-39 shows the phasor...Ch. 24 - Prob. 85GPCh. 24 - Predict/Calculate Black-Box Experiment You are...Ch. 24 - An RLC circuit with R = 20.0 , L = 295 mH, and C =...Ch. 24 - A Light-Dimmer Circuit The intensity of a...Ch. 24 - An electric motor with a resistance of 15 arid an...Ch. 24 - Predict/Calculate Tuning a Radio A radio tuning...Ch. 24 - If the maximum voltage in the square wave shown in...Ch. 24 - An ac generator supplies an rms voltage of 5.00 V...Ch. 24 - An RC circuit consists of a resistor R = 32 , a...Ch. 24 - Prob. 94PPCh. 24 - Prob. 95PPCh. 24 - Prob. 96PPCh. 24 - Prob. 97PPCh. 24 - Prob. 98PPCh. 24 - Prob. 99PP
Additional Science Textbook Solutions
Find more solutions based on key concepts
4. If you were standing directly at the earth’s north magnetic pole, in what direction would a compass point if...
College Physics: A Strategic Approach (3rd Edition)
Why is it unlikely that two neighboring water molecules would be arranged like this?
Campbell Biology (11th Edition)
Match each of the following items with all the terms it applies to:
Human Physiology: An Integrated Approach (8th Edition)
Flask A contains yeast cells in glucose-minimal salts broth incubated at 30C with aeration. Flask B contains ye...
Microbiology: An Introduction
1.1 Write a one-sentence definition for each of the following:
a. chemistry
b. chemical
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Which type of cartilage is most plentiful in the adult body?
Anatomy & Physiology (6th Edition)
Knowledge Booster
Learn more about
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
- Consider the circuit shown in the figure below. (Assume L = 5.20 m and R2 = 440 Ω.) (a) When the switch is in position a, for what value of R1 will the circuit have a time constant of 15.4 µs? (b) What is the current in the inductor at the instant the switch is thrown to position b?arrow_forwardCan someone helparrow_forwardCan someone help mearrow_forward
- A particle in a box between x=0 and x=6 has the wavefunction Psi(x)=A sin(2πx). How muchenergy is required for the electron to make a transition to Psi(x)= A’ sin(7π x/3). Draw anapproximate graph for the wavefunction. Find A and A'arrow_forwardA proton is moving with 10^8 m/s speed. Find the De Broglie wavelength associated with theproton and the frequency of that wave.arrow_forwardFind the wavelength of the photon if a (Li--) electron makes a transition from n=4 to n=3. Findthe Bohr radius for each state.arrow_forward
- A photon with wavelength 3000 nm hits a stationary electron. After the collision electron isscattered to 60 degrees. Find the wavelength and frequency of the scattered photon.arrow_forwardA metal has threshold frequency 10^15. Calculate the maximum kinetic energy of the ejectedelectron if a laser beam with wavelength 1.5 10^-7 m is projected on the metal.arrow_forwardDetermine the direction of the vector V, B, or ♬ that is missing from the pair of vectors shown in each scenario. Here, u is the velocity vector of a moving positive charge, B is a constant and uniform magnetic field, and F is the resulting force on the moving charge. 1. 2. 3. B OB F 4. ↑F F 5. 怔 ↑ ↑F Answer Bank 6. ↑ TE Farrow_forward
- Two point charges (+9.80 nC and -9.80 nC) are located 8.00 cm apart. Let U=0 when all of the charges are separated by infinite distances. What is the potential energy if a third point charge q=-4.20 nC is placed at point b? 8.00 cm 8.00 cm 4.00 +4.00 +4.00- cm cm cm HJarrow_forward! Required information Two chloride ions and two sodium ions are in water, the "effective charge" on the chloride ions (CI¯) is −2.00 × 10-21 C and that of the sodium ions (Na+) is +2.00 x 10-21 C. (The effective charge is a way to account for the partial shielding due to nearby water molecules.) Assume that all four ions are coplanar. CT Na+ Na+ 30.0° 45.0% с сг L. where a = 0.300 nm, b = 0.710 nm, and c = 0.620 nm. What is the direction of electric force on the chloride ion in the lower right-hand corner in the diagram? Enter the angle in degrees where positive indicates above the negative x-axis and negative indicates below the positive x-axis.arrow_forwardA pendulum has a 0.4-m-long cord and is given a tangential velocity of 0.2 m/s toward the vertical from a position 0 = 0.3 rad. Part A Determine the equation which describes the angular motion. Express your answer in terms of the variable t. Express coefficients in radians to three significant figures. ΜΕ ΑΣΦ vec (t)=0.3 cos (4.95t) + 0.101 sin (4.95t) Submit Previous Answers Request Answer × Incorrect; Try Again; 6 attempts remainingarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Introduction To Alternating Current; Author: Tutorials Point (India) Ltd;https://www.youtube.com/watch?v=0m142qAZZpE;License: Standard YouTube License, CC-BY