Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 25, Problem 46P
In the circuit of Fig. 25.30, find (a) the current supplied by the battery and (b) the current through the 6-Ω resistor.
FIGURE 25.30 Problems 46 and 47
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Question 4:
Consider the circuit
shown in Fig.T 8.3. The termi-
nal voltage of the 24.0-V battery
is 21.2 V. What are (a) the inter-
nal resistance r of the battery and
(b) the resistance R of the circuit
resistor?
4.00 A
↓
r 24.0 V
ww
R
www
Figure.T 8.3
↑
4.00 A
Four resistors are connected in a circuit with a battery of unknown emf, as shown below. The battery is ideal, so it has no internal resistance. The current in the 30 2 resistor is 100. milliamps. Note
that you should be able to do this problem without a calculator.
+
20 2
60 Ω
30 2
80 Q
(a) Calculate the current in the 60 resistor.
(b) Calculate the current in the 80 N resistor.
mA
(c) Calculate the power dissipated in the 20 2 resistor.
(d) Calculate the current in the battery.
mA
24.0 V
4.00 A
R
4.00 A
Figure N
8. Consider the circuit shown in Figure b. The terminal voltage of the 24.0 V
battery is 21.2 V. What is
a) the internal resistance r of the battery; b) the resistance R of the circuit
resistor???
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
15. A 9.0 V battery supplies a 2.5 mA current to a circuit for 5.0 h.
a. How much charge has been transferred f...
College Physics: A Strategic Approach (3rd Edition)
Based on your answers to Questions 2 and 3, which part of the Atlantic basin appears to have opened first?
Applications and Investigations in Earth Science (9th Edition)
Explain how the use of an oxygen isotope helped elucidate the chemistry of photosynthesis.
Campbell Biology (11th Edition)
The bioremediation process shown in the photograph is used to remove benzene and other hydrocarbons from soil c...
Microbiology: An Introduction
APPLY 1.2 Express the following quantities in scientific notation
using fundamental SI units of mass and lengt...
Chemistry (7th Edition)
Where is transitional epithelium found and what is its importance at those sites?
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
- Power P0 = I0 V0 is delivered to a resistor of resistance R0. If the resistance is doubled (Rnew = 2R0) while the voltage is adjusted such that the current is constant, what are the ratios (a) Pnew/P0 and (b) Vnew/V0? If, instead, the resistance is held constant while Pnew = 2P0, what are the ratios (c) Vnew/V0, and (d) Inew/I0?arrow_forwardExplain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as accurate as P=P0(1 + a?T) which gives the temperature variation of resistivity P.arrow_forwardA 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?arrow_forward
- When a R = 88.3 Q resistor is connected across a.11.3 V battery, a current of 114.4 mA flows. What is the internal resistance of the battery and Terminal voltage of the battery ? A E(MF) Restemal CAternal Rinternall (a) internal resistance of the battery(in 2) =- (b) Terminal voltage of the battery in V = Batteryarrow_forwardIf one wants to design a 1500 W electrical heater that consists of a resistor R with V = 208 V across it, what value should be chosen for R?arrow_forwardA toy battery has an emf of 33.0 V. The terminal voltage of the battery is 15.50 V when it is delivering 30.50 W of power to an external load resistor R. What is the internal resistance ( in Q) of the battery? Round your answer to the nearest thousandth of Q.arrow_forward
- When a R = 89.4 Q resistor is connected across a 11.1 V battery, a current of 114.4 mA flows. What is the internal resistance of the battery and Terminal voltage of the battery ? A E(MF) Rexternal Rinternal (a) internal resistance of the battery(in 2) = (b) Terminal voltage of the battery in V = Batteryarrow_forwardChapter 27, Problem 039 GO In the figure two batteries of emf E = 11.0 V and internal resistance r = 0.306 are connected in parallel across a resistance R. (a) For what value of R is the dissipation rate in the resistor a maximum? (b) What is that maximum? HF 8 FWW 8 Rarrow_forwardConsider the circuit shown in the figure below. (Let R = 38.00.) 25.0 V 5.00 ΩΣ a 10.0 Ω ww 10.02 ww www 5.00 2 (a) Find the current in the 38.0-0 resistor. R 4 (b) Find the potential difference between points a and b V ℗arrow_forward
- Four resistors, R₁ 27.09, R₂ = 48.0N, R3 = 88.0 and R4 dissipated in the R₂ = 48.00 resistor. R₁ ww R4 ww R3 www R₂ www + H V 17.09, are connected to a battery with a terminal voltage of 12.0V, as shown in the figure below. Determine the powerarrow_forward(a) Three 4.90 Q resistors are connected in series to a 14.0 V battery. What is the equivalent resistance (in N) of the circuit? What is the current (in A) in each resistor? A (b) Three other 4.90 Q resistors are all connected in parallel across a second 14.0 V battery. What is the equivalent resistance (in Q) of this circuit? What is the current (in A) in each resistor in this circuit? Aarrow_forwardPlease Asaparrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Ohm's law Explained; Author: ALL ABOUT ELECTRONICS;https://www.youtube.com/watch?v=PV8CMZZKrB4;License: Standard YouTube License, CC-BY