Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 25, Problem 64P
With all values except ℰ2 as given in the preceding problem, (a) find ℰ2 such that there is no current in this battery. (b) What are the currents in R1 and R3 under these conditions?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
- I
A 230-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,070 A. If the conductor is copper with a free charge density of 8.50 x 1028 electrons per cubic meter,
how many years does it take one electron to travel the full length of the cable? (Use 3.156 x 107 for the number of seconds in a year.)
yr
Need Help? Read It
Master It
R
20
Compute for the total charge, in microcoulombs. v(t) = 2cos(2π 49 t) is applied across a 48Ω resistor. Initial charge of 9 microcoulombs in the resistor is traveling through the resistor in a span of 2.49 seconds.
Suppose a flashlight has 6.8 × 102 C of charge pass through it during time 0.35 h.
A. What is the rate of the flashlight’s energy consumption, in watts, if it operates at a voltage of 3.00 V?
Chapter 25 Solutions
Essential University Physics (3rd Edition)
Ch. 25.1 - The figure shows three circuits. Which are...Ch. 25.2 - Rank front highest to lowest the voltages across...Ch. 25.2 - The figure shows all four possible combinations of...Ch. 25.2 - The figure shows a circuit with three identical...Ch. 25.3 - Which circuit(s) cannot be analyzed using series...Ch. 25.4 - All resistors in the figure have the same value...Ch. 25.5 - A capacitor is charged to 12 V and then connected...Ch. 25 - Are household electrical outlets connected in...Ch. 25 - All the resistors in Fig. 25.24 have the same...Ch. 25 - Can the voltage across a batterys terminals differ...
Ch. 25 - Can the voltage across a batterys terminals he...Ch. 25 - In some cities, streetlights are wired in such a...Ch. 25 - When the switch in Fig. 25.25 is open, whats the...Ch. 25 - Two identical resistors in series dissipate equal...Ch. 25 - When a large electric load such as a washing...Ch. 25 - How would you connect a pair of equal resistors...Ch. 25 - You have a battery whose voltage and internal...Ch. 25 - A student whos confused about voltage and current...Ch. 25 - A student whos confused about voltage and current...Ch. 25 - Sketch a circuit diagram for a circuit that...Ch. 25 - Sketch a diagram for a circuit consisting of two...Ch. 25 - Resistors R1 and R2 are in series, and the series...Ch. 25 - Whats the emf of a battery that delivers 27 J of...Ch. 25 - A 1.5-V battery stores 4.5 kJ of energy. How long...Ch. 25 - If you accidentally leave your car headlights...Ch. 25 - A 47-k resistor and a 39-k resistor are in...Ch. 25 - What resistance should you place in parallel with...Ch. 25 - A defective starter motor draws 300 A from a cars...Ch. 25 - Find the internal resistance of the battery in...Ch. 25 - When a 9-V battery is temporarily short-circuited,...Ch. 25 - You have a 1.0-, a 2.0-, and a 3.0- resistor. What...Ch. 25 - Find all three currents in the circuit of Fig....Ch. 25 - Prob. 26ECh. 25 - Find all three currents in the circuit of Fig....Ch. 25 - Prob. 28ECh. 25 - An ammeter with 100- resistance is inserted in the...Ch. 25 - A new mechanic foolishly connects an ammeter with...Ch. 25 - Show that the quantity RC has the units of time...Ch. 25 - If capacitance is in F, what will he the units of...Ch. 25 - Show that a capacitor is charged to approximately...Ch. 25 - An uncharged 10-F capacitor and a 470-k resistor...Ch. 25 - Find an expression for the voltage across the...Ch. 25 - In Fig. 25.28, all resistors have the same value,...Ch. 25 - In Fig. 25.28, take all resistors to be 1 k Find...Ch. 25 - Three 1.5-V batteries, with internal resistances...Ch. 25 - A partially discharged car battery can be modeled...Ch. 25 - Your company is overstocked on 50- , 12-W...Ch. 25 - Prob. 41PCh. 25 - How many 100-W, 120-V lightbulbs can be connected...Ch. 25 - You company is designing a battery-based backup...Ch. 25 - Take = 12 V and R1 = 270 in Fig. 25.4. (a) Whats...Ch. 25 - In Fig. 25.29, R1 is a variable resistor and the...Ch. 25 - In the circuit of Fig. 25.30, find (a) the current...Ch. 25 - In Fig. 25.30, how much power is dissipated in the...Ch. 25 - Whats the ammeter reading in Fig. 25.31? FIGURE...Ch. 25 - In Fig. 25.32, find the equivalent resistance...Ch. 25 - Find all three currents in the circuit of Fig....Ch. 25 - The voltage across the 30-k resistor in Fig. 25.33...Ch. 25 - In Fig. 25.34, what are the meter readings when an...Ch. 25 - A resistor draws 1.00 A from an ideal 12.0-V...Ch. 25 - The voltage across a charging capacitor in an RC...Ch. 25 - Youre designing an external defibrillator that...Ch. 25 - A capacitor is charged until it holds 5.0 J of...Ch. 25 - A capacitor is charged until it holds 5.0 J of...Ch. 25 - In Fig. 25.35 the 2.0-F capacitor is charged to...Ch. 25 - For the circuit of Example 25.6, take = 100 V,...Ch. 25 - In Fig. 25.36, the switch is initially open and...Ch. 25 - Prob. 61PCh. 25 - An ammeter with resistance 1.42 is connected...Ch. 25 - In Fig. 25.37, take 1 = 12.0 V, 2 = 6.00 V, 3 =...Ch. 25 - With all values except 2 as given in the preceding...Ch. 25 - The voltage on a charged capacitor is monitored...Ch. 25 - Find the resistance needed in an RC circuit to...Ch. 25 - Suppose the currents into and out of a circuit...Ch. 25 - Show that a battery delivers the most power when...Ch. 25 - Youre writing the instruction manual for a stereo...Ch. 25 - Show that only half the total energy drawn from a...Ch. 25 - Find the equivalent resistance between A and B for...Ch. 25 - Prob. 72PCh. 25 - Obtain an expression for the rate of increase...Ch. 25 - The circuit in Fig. 25.39 extends forever to the...Ch. 25 - Figure 25.40 on the next page shows the voltage...Ch. 25 - Figure 25.41 shows a portion of a circuit used to...Ch. 25 - An electrochemical impulse traveling along the...Ch. 25 - A parallel-plate capacitor has plates of area...Ch. 25 - Write the node and loop equations for the circuit...Ch. 25 - In Problem 60, take C1 = C2 = C, and find the...Ch. 25 - Youre about to purchase a battery. Normally,...Ch. 25 - In the circuit of Fig. 25.42 the switch is...Ch. 25 - BIO Stray voltage is a serious problem on dairy...Ch. 25 - BIO Stray voltage is a serious problem on dairy...Ch. 25 - BIO Stray voltage is a serious problem on dairy...Ch. 25 - BIO Stray voltage is a serious problem on dairy...
Additional Science Textbook Solutions
Find more solutions based on key concepts
11.73 The Farmyard Gate. A gate 4.00 m wide and 2.00 m high weighs 700 N. Its center of gravity is at its cente...
University Physics (14th Edition)
What is the volume of one mole of air, at room temperature and 1 atm pressure?
An Introduction to Thermal Physics
98. Only a small percentage of the electric energy supplied to a common light bulb is transformed into light. W...
Conceptual Physical Science (6th Edition)
How does the total amount of energy coming from the Sun compare to the total amount of energy leaving Earth to ...
Lecture- Tutorials for Introductory Astronomy
Electrostatic precipitator (esp) Electrostatic precipitators are a common form of air-cleaning device ESPs are ...
College Physics
The speed of the person sitting on the chair relative to the chair and relative to Earth.
Conceptual Physics (12th 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
- In the figure, R1 = 100 2, R2 50 2, E1= 6 V, E2=5 V, and E3=4 V. Find (a) the current In in R1. (b) the current I2 in R2. (c) The potential difference between points a and b. %3D E3 Ez బో-arrow_forwardTwo wires of circular cross section are made of the same metal.Wire 1 has radius r and length L; wire 2 has radius 2r and length 2L. Thepotential difference between the ends of the wire is the same for both wires.For each of the following quantities, find the ratio of its value for wire 2to its value for wire 1: current density in the wirearrow_forwardE2 R1 R2 2. Find the charge on the capacitor after the switch has been left open for some time, then closed for some period of time. We can assume that C = 2 µF, with batteries of values E1 = 2V and E2 = 1 V, and resistor values R1 R2 = 0.25 2. 0.52 andarrow_forward
- Construct Your Own Problem. Consider a battery used to supply energy to a cellular phone. Construct a problem in which you determine the energy that must be supplied by the battery, and then calculate the amount of charge it must be able to move in order to supply this energy. Among the things to be considered are the energy needs and battery voltage. You may need to look ahead to interpret manufacturer’s battery ratings in ampere-hours as energy in joules.arrow_forwardΓΩ of 10.0 2 ion 2.5 V Figure shows a circuit which consists of a battery connected in series with a 10.0 Q resistor. The potential difference across the resistor is measured as 2.5 V. If the internal resistance of the battery is 20, 1. The current through the circuit is = A 2. The emf of the battery is = Varrow_forwardWhat is the current I through the resistor at t= 50 micro seconds, and immediately after the switch is closed? What is the charge Q on the capacitors at t= 200 micro seconds?arrow_forward
- Whenever a battery is charging, which of the following is true? The given information is insufficient to be able to conclude. O Its terminal voltage will always be less than its EMF. O Its terminal voltage will always be greater than its EMF. O Its terminal voltage will always be equal to its EMF.arrow_forwardConsider the circuit below. The switch is first closed and after a long time passes, the switch is reopened. Calculate the charge stored in the capacitor 7 x10s after the switch is reopened. Give your answer in x10 C to 3 sig figs. Switch R1 to 2 k2 20 V R, 3500 2 C: 100 µF R3 3 k2 GOarrow_forwardThe electromotive force from a battery drives a current around the circuit shown in the figure. Measurements indicate that 6250 µC of charge pass point A in 10.0 s. A Device (a) What is the current in the circuit? i (b) How many electrons pass point A per second? i (c) What direction are the electrons flowing around the circuit? Save for Later x 10-4 A x 1015 electrons/s clockwise counterclockwise Attempts: 0 of 3 used Submit Answerarrow_forward
- in the curcuit shown in the figure , the S switch is closed at t = 0 and the capacitors, which are completely empty, begin to fill. Here E = 20 V , C = 4uF and R = 30 ohm. a) what is the time constant of the circuit , T in units of microseconds? b)when t=T , what is the total charge , in units of microcloumb accumulated in the capacitors ?arrow_forwardA 2.00-nF capacitor with an initial charge of 4.60 µC is discharged through a 2.69-kΩ resistor. (a) Calculate the current in the resistor 9.00 µs after the resistor is connected across the terminals of the capacitor. (Let the positive direction of the current be define such that dQ/dt>0.) I get 160.5ma which is wrong.arrow_forwardIf the current I, = 3 A, use the potential difference Vab to determine the value of the current I2. 24.0 V Answer: 3.00 N 6.00 N I2=-2 Aarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Ohm's law Explained; Author: ALL ABOUT ELECTRONICS;https://www.youtube.com/watch?v=PV8CMZZKrB4;License: Standard YouTube License, CC-BY