College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 21, Problem 40PE
Find the currents flowing in the circuit in Figure 21.47.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A 0.1 mV emf and a 2 cm cube of pure gold are connected. Calculate the current measured by an ammeter in this circuit.
Two resistors are connected in parallel with an 43 volt battery. The resistors have values of R1 = 32 ohms and R2 = 72 ohms. What is the current (in amps) in this circuit? Round your answer to two decimal places.
Given the circuit and currents i1=0.026A, i2=-0.0142A, and i3=0.0154,
Find change in voltage from point A to point F. Find through short (VA->E->F) and long (VA->B->C->F) ways. Answer in units of Volts.
Hints: Use Kirckoff's Laws. Answer should be +9.0741V for both ways.
Chapter 21 Solutions
College Physics
Ch. 21 - A switch has a variable resistance that is nearly...Ch. 21 - What is the voltage across the open switch in...Ch. 21 - There is a voltage across an open switch, such as...Ch. 21 - Why is the power dissipated by a closed switch,...Ch. 21 - A student in a physics lab mistakenly wired a...Ch. 21 - Knowing that the severity of a shock depends on...Ch. 21 - Would your headlights dim when you start your...Ch. 21 - Some strings of holiday lights are wired in series...Ch. 21 - If two household lightbulbs rated 60 W and 100 W...Ch. 21 - Suppose you are doing a physics lab that asks you...
Ch. 21 - Before World War II, some radios got power through...Ch. 21 - Some light bulbs have three power settings (not...Ch. 21 - Is every emf a potential difference? Is every...Ch. 21 - Explain which battery is doing the charging and...Ch. 21 - Given a battery, an assortment of resistors, and a...Ch. 21 - Two different 12-V automobile batteries on a store...Ch. 21 - What are the advantages and disadvantages of...Ch. 21 - Semitractor trucks use four large 12-V batteries....Ch. 21 - Call all of the currents going into the junction...Ch. 21 - Apply the junction rule to junction b in Figure...Ch. 21 - (a) What is the potential difference going from...Ch. 21 - Apply the loop rule to loop afedcba in Figure...Ch. 21 - Apply the loop rule to loops abgefa and cbgedc in...Ch. 21 - Why should you not connect an ammeter directly...Ch. 21 - Suppose you are using a multimeter (one designed...Ch. 21 - Specify the points to which you could connect a...Ch. 21 - To measure currents in Figure 21.49, you would...Ch. 21 - Why can a null measurement be more accurate than...Ch. 21 - If a potentiometer is used to measure cell emfs on...Ch. 21 - Regarding the units involved in the relationship t...Ch. 21 - The RC time constant in heart defibrillation is...Ch. 21 - When making an ECG measurement, it is important to...Ch. 21 - Draw two graphs of charge versus time on a...Ch. 21 - When charging a capacitor, as discussed in...Ch. 21 - When discharging a capacitor, as discussed in...Ch. 21 - Referring to Figure 21.38, draw a graph of...Ch. 21 - A long, inexpensive extension cord is connected...Ch. 21 - In Figure 21.41. does the graph indicate the time...Ch. 21 - An electronic apparatus may have large capacitors...Ch. 21 - (a) What is the resistance often 275-O resistors...Ch. 21 - (a) What is the resistance of a 1.00 102-O, a...Ch. 21 - What are the largest and smallest resistances you...Ch. 21 - An 1800-W toaster, a 1400-W electric frying pan,...Ch. 21 - Your car’s 30.0-W headlight and 2.40-kW starter...Ch. 21 - (a) Given a48.0-V battery and 24.0-O and 96.0-O...Ch. 21 - Referring to the example combining series and...Ch. 21 - Referring to Figure 21.6: (a) Calculate P3 and...Ch. 21 - Refer to Figure 21.7 and the discussion of lights...Ch. 21 - A 240-kV power transmission line carrying...Ch. 21 - Show that if two resistors R1and R2are combined...Ch. 21 - Unreasonable Results Two resistors, one having a...Ch. 21 - Unreasonable Results Two resistors, one having a...Ch. 21 - Standard automobile batteries have six lead-acid...Ch. 21 - Car bon-zinc dry cells (sometimes referred to as...Ch. 21 - What is the output voltage of a 3.0000-V lithium...Ch. 21 - (a) What is the terminal voltage of a large 1.54-V...Ch. 21 - What is the internal resistance of an automobile...Ch. 21 - (a) Find the terminal voltage of a 12.0-V...Ch. 21 - A car battery with a 12-V emf and an internal...Ch. 21 - The hot resistance of a flashlight bulb is 2.30 ,...Ch. 21 - The label or a portable radio recommends the use...Ch. 21 - An automobile starter motor has an equivalent...Ch. 21 - A child’s electronic toy is supplied by three...Ch. 21 - (a) What is the internal resistance of a voltage...Ch. 21 - A person with body resistance between his hands of...Ch. 21 - Electric fish generate current with biological...Ch. 21 - Integrated Concepts A 12.0-V emf automobile...Ch. 21 - Unreasonable Results A 1.58-V alkaline cell with a...Ch. 21 - Unreasonable Results (a) What is the internal...Ch. 21 - Apply the loop rule to loop abcdefgha in Figure...Ch. 21 - Apply the loop rule to loop aedcba in Figure...Ch. 21 - Verify the second equation in Example 21.5 by...Ch. 21 - Verify the third equation in Example 21.5 by...Ch. 21 - Apply the junction rule at point a in Figure...Ch. 21 - Apply the loop rule to loop abcdefghija in Figure...Ch. 21 - Apply the loop rule to loop akledcba in Figure...Ch. 21 - Find the currents flowing in the circuit in Figure...Ch. 21 - Solve Example 21.5, but use loop abcdefgha instead...Ch. 21 - Find the currents flowing in the circuit in Figure...Ch. 21 - Unreasonable Results Consider the circuit in...Ch. 21 - What is the sensitivity of the galvanometer (that...Ch. 21 - What is the sensitivity of the galvanometer (that...Ch. 21 - Find the resistance that must be placed in series...Ch. 21 - Find the resistance that must be placed in series...Ch. 21 - Find the resistance that must be placed in series...Ch. 21 - Find the resistance that must be placed in...Ch. 21 - Find the resistance that must be placed in series...Ch. 21 - Find the resistance that must be placed in...Ch. 21 - Suppose you measure the terminal voltage of a...Ch. 21 - Suppose you measure the terminal voltage of a...Ch. 21 - A certain ammeter has a resistance of 5.00X10-5 ...Ch. 21 - A 1,00-?O voltmeter is placed in parallel with a...Ch. 21 - A 0.0200- ammeter is placed in series with a...Ch. 21 - Unreasonable Results Suppose you have a 40.0-...Ch. 21 - Unreasonable Results (a) What resistance would you...Ch. 21 - What is the emf x of a cell being measured in a...Ch. 21 - Calculate the emfx of a dry cell for which a...Ch. 21 - When an unknown resistance Rxis placed in a...Ch. 21 - To what value must you adjust R3to balance a...Ch. 21 - (a) What is the unknown emfx in a potentiometer...Ch. 21 - Suppose you want to measure resistances in the...Ch. 21 - The timing device in an automobile’s intermittent...Ch. 21 - A heart pacemaker fires 72 times a minute, each...Ch. 21 - The duration of a photographic flash is related to...Ch. 21 - A 2.00- and a 7.50-F capacitor can be connected in...Ch. 21 - After two time constants, what percentage of the...Ch. 21 - A 500- resistor, an uncharged 1.50-F capacitor and...Ch. 21 - A heart defibrillator being used on a patient has...Ch. 21 - An ECG monitor must have an RC time constant less...Ch. 21 - Figure 21.55 shows how a bleeder resistor is used...Ch. 21 - Using the exact exponential treatment, find how...Ch. 21 - Using the exact exponential treatment, find how...Ch. 21 - Integrated Concepts If you wish to take a picture...Ch. 21 - Integrated Concepts A flashing lamp in a Christmas...Ch. 21 - Integrated Concepts A 160F capacitor charged to...Ch. 21 - Unreasonable Results (a) Calculate the capacitance...Ch. 21 - Construct Your Own Problem Consider a camera's...Ch. 21 - Construe! Your Own Problem Consider a rechargeable...
Additional Science Textbook Solutions
Find more solutions based on key concepts
28. (I) Calculate the force of Earth's gravity on a spacecraft 2.00 Earth radii above the Earth's surface if it...
Physics: Principles with Applications
Q2.1 Does the speedometer of a car measure speed or velocity? Explain.
University Physics with Modern Physics (14th Edition)
The electromagnetic spectrum of light is often arranged in terms of frequency. Which one of the following has t...
Lecture- Tutorials for Introductory Astronomy
47. A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original ...
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Point charges q1=50C and q2=25C are placed 1.0 m apart. What is the force on a third charge q3=20C placed midwa...
University Physics Volume 2
Light a bulb using a battery and a single wire. Observe and record the behavior (i.e., brightness of the bulb w...
Tutorials in Introductory Physics
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
- Two identical resistors of 276 Ohms are configured in parallel and connected to a 13.3V power supply. If the same two resistors are then connected in series,what should the voltage of the power supply by charged to such that the parallel and series configurations draw the same amount to power?arrow_forwardAn ideal battery has an emf of 14.3 V. If it is connected to a circuit and creates a current of 2.18A, what is the power delivered by the battery in units of Watts?arrow_forward9. (A) Consider the circuit in Figure on the right and assume the battery has no internal resistance. Just after the switch is closed, what is the current in the battery? R B) The switch is closed in the figure. After a long time compared to the time constant of the capacitor, what will the current be in the 2-2 resistor? 2Ω 10 %23 HE 1 F 6 Varrow_forward
- Consider a simple circuit consisting of a battery, a closed switch, and a resistor. The voltage across the battery is 1.72 V, and the current through the resistor is 3.93 A. If the resistor is a cylindrical resistor of length 0.06 m made of a material with resistivity of 5.6x10-6 ohm-meters, what is the cross-sectional area of the resistor element? Your answer should be in m2.arrow_forwardA 12µF, a 9.0µF and a 7.0µF capacitor are connected in series, and this combination is connected in parallel with a 6.0µF capacitor. Draw this circuit and calculate the equivalent capacitance.arrow_forward3:26 A docs.google.com Using ohm's law, determine how much electrical current will flow through this circuit. Your answer 60V ww Vこ? What is the voltage drop across the 4 ohm resistor?arrow_forward
- Find Iz in the circuit below. Use units (A), please. R, b a 20 2 1, 82 0.5 2 R2 62 E3 12 V 18 V E2 3.0 V 0.5 2 0.25 2 E4 R4 e 15 2 0.75 2 24 vlarrow_forward23. 2. Each resistor in the circuit below has a resistance of 3 ohm. The voltage supplied by the battery is 12 V. What is the voltage across and current through the resistor B? a. A The current flowing through the resistor A is = ......A b. The voltage drop across the resistor A is =.....Varrow_forward27. 1. If all the resistors in the circuit shown below have equal resistances and the current flowing through resistor A is 4 A, What is the current flowing through resistor E ? (source voltage is not required to answer this question) The current flowing through resistor is=arrow_forward
- When a 24 resistor is connected across a 12 V battery, a current of 482 mA flows. What is the resulting terminal voltage of the battery?arrow_forwardA technician is troubleshooting a problem in an electrical circuit. Sevenidentical air conditioners are running on one circuit. With all of them running,12.845 amperes of current flow through the circuit. What should each airconditioner have as current running through its unit?arrow_forwardR = 13.0 Consider the circuit shown in the figure, where &, = 21.7 V, E, 11.3 V, and Q. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) 28.0 N 12.0 0arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON
Series & Parallel - Potential Divider Circuits - GCSE & A-level Physics; Author: Science Shorts;https://www.youtube.com/watch?v=vf8HVTVvsdw;License: Standard YouTube License, CC-BY