Physics
7th Edition
ISBN: 9780321625915
Author: Douglas C. Giancoli
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 19, Problem 62P
A galvanometer has an internal resistance of 32 Ω and deflects full scale for a 55-μA current. Describe how to use this galvanometer to make (a) an ammeter to read currents up to 25 A, and (b) a voltmeter to give a full-scale deflection of 250V.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A solar cell generates a potential difference of 0.17 V when a 520 0 resistor is connected across it, and a potential difference of 0.25
V when a 940 resistor is substituted. What are the (a) internal resistance and (b) emf of the solar cell? (c) The area of the cell is 2.5
cm? and the rate per unit area at which it receives energy from light is 5.1 mW/cm². What is the efficiency of the cell for converting
light energy to thermal energy in the 940 Q external resistor?
(a) Number
i
Units
(b) Number
i
Units
(c) Number
Units
>
>
1. (a) A defibrillator (a device that stores charge on a capacitor used to start the heart beat of a patient
under cardiac arrest after suffering irregular heartbeats) sends a 6 A current through the chest of a
patient by applying a 7500 V potential as in the figure. What is the resistance of the path (through the
wire and the body)?
-alita
R=
ΙΚΩ
(b) The defibrillator paddles make contact with the patient through a conducting gel that greatly
reduces the path resistance. To understand the importance of using the gel, discuss the difficulties
that would ensue if a larger voltage were used to produce the same current through the patient, but
with the path having perhaps 50 times the resistance by finding the ratio,
Po
no-gel
gel
(Hint: The current must be about the same, so a higher voltage would imply greater power. Use this
equation for power: P = PR.)
What difficulties arise when no gel is used?
O a. The voltage is too high for the human body even when the current is the same.
O b.…
A dry cell with an emf of 1.50V and an internal resistance of 0.050 ohms is "shorted out" with a piece of wire with a resistance of only 0.20 ohms. What will a voltmeter read if it is connected to the terminals of the dry cell at this time?
Chapter 19 Solutions
Physics
Ch. 19 - Prob. 1OQCh. 19 - Prob. 1QCh. 19 - Prob. 2QCh. 19 - Prob. 3QCh. 19 - Prob. 4QCh. 19 - Prob. 5QCh. 19 - Prob. 6QCh. 19 - Prob. 7QCh. 19 - Prob. 8QCh. 19 - Prob. 9Q
Ch. 19 - Prob. 10QCh. 19 - Prob. 11QCh. 19 - Prob. 12QCh. 19 - Prob. 13QCh. 19 - Prob. 14QCh. 19 - Prob. 15QCh. 19 - Given the circuit shown in Fig. 19-38, use the...Ch. 19 - Prob. 17QCh. 19 - Prob. 18QCh. 19 - 19. What is the main difference between an analog...Ch. 19 - What would happen if you mistakenly used an...Ch. 19 - Prob. 21QCh. 19 - Prob. 22QCh. 19 - Prob. 23QCh. 19 - Prob. 1MCQCh. 19 - Prob. 2MCQCh. 19 - Prob. 3MCQCh. 19 - Prob. 4MCQCh. 19 - Prob. 5MCQCh. 19 - Prob. 6MCQCh. 19 - Prob. 7MCQCh. 19 - Prob. 8MCQCh. 19 - Prob. 9MCQCh. 19 - Prob. 10MCQCh. 19 - Prob. 11MCQCh. 19 - Prob. 12MCQCh. 19 - Prob. 13MCQCh. 19 - Prob. 14MCQCh. 19 - Prob. 15MCQCh. 19 - Calculate the terminal voltage for a battery with...Ch. 19 - Prob. 2PCh. 19 - What is the internal resistance of a 12.0-V car...Ch. 19 - A 650-O and an 1800-O resistor are connected in...Ch. 19 - Prob. 5PCh. 19 - Suppose that you have a 580-O, a 790-O, and a...Ch. 19 - Prob. 7PCh. 19 - Prob. 8PCh. 19 - Prob. 9PCh. 19 - Prob. 10PCh. 19 - Prob. 11PCh. 19 - Eight identical bulbs are connected in series...Ch. 19 - Prob. 13PCh. 19 - Prob. 14PCh. 19 - Prob. 15PCh. 19 - Determine (a) the equivalent resistance of the...Ch. 19 - Prob. 17PCh. 19 - (a) Determine the equivalent resistance of the...Ch. 19 - What is the net resistance of the circuit...Ch. 19 - Prob. 20PCh. 19 - Prob. 21PCh. 19 - Prob. 22PCh. 19 - Prob. 23PCh. 19 - Consider the network of resistors shown in Fig....Ch. 19 - Calculate the current in the circuit of Fig....Ch. 19 - Determine the terminal voltage of each battery in...Ch. 19 - For the circuit shown in Fig.19-55, find the...Ch. 19 - Determine the magnitudes and directions of the...Ch. 19 - (a) What is the potential difference between...Ch. 19 - Prob. 30PCh. 19 - 31. (II) Determine the magnitudes V1= 9.0 V R1, =...Ch. 19 - Prob. 32PCh. 19 - Prob. 33PCh. 19 - (a) Determine the currents l1,l2 and l3 in Fig....Ch. 19 - Prob. 35PCh. 19 - Prob. 36PCh. 19 - Prob. 37PCh. 19 - Prob. 38PCh. 19 - A 3.00-F and a 4.00-F capacitor are connected in...Ch. 19 - If 21.0 V is applied across the whole network of...Ch. 19 - The capacitance of a portion of a circuit is to be...Ch. 19 - An electric circuit was accidentally constructed...Ch. 19 - Consider three capacitors, of capacitance 3200...Ch. 19 - Determine the equivalent capacitance between...Ch. 19 - What is the ration of the voltage V1 across...Ch. 19 - A 0.50-F and a 1.4-F capacitor are connected in...Ch. 19 - A circuit contains a single 250-pF capacitor...Ch. 19 - Prob. 48PCh. 19 - Prob. 49PCh. 19 - Given three capacitors. C1= 2.0$ mUF, C2= 1.5 F,...Ch. 19 - Prob. 51PCh. 19 - Prob. 52PCh. 19 - Prob. 53PCh. 19 - In Fig. 19-69 (same as Fig. 19-20a ), the total...Ch. 19 - Prob. 55PCh. 19 - Prob. 56PCh. 19 - Prob. 57PCh. 19 - Two resistors and two uncharged capacitors are...Ch. 19 - Prob. 59PCh. 19 - Prob. 60PCh. 19 - Prob. 61PCh. 19 - A galvanometer has an internal resistance of 32 ...Ch. 19 - Prob. 63PCh. 19 - Prob. 64PCh. 19 - Prob. 65PCh. 19 - Prob. 66PCh. 19 - Prob. 67GPCh. 19 - Prob. 68GPCh. 19 - Prob. 69GPCh. 19 - Prob. 70GPCh. 19 - A heart pacemaker is designed to operate at 72...Ch. 19 - Prob. 72GPCh. 19 - Prob. 73GPCh. 19 - Prob. 74GPCh. 19 - Prob. 75GPCh. 19 - Prob. 76GPCh. 19 - Prob. 77GPCh. 19 - Prob. 78GPCh. 19 - Prob. 79GPCh. 19 - Prob. 80GPCh. 19 - Prob. 81GPCh. 19 - Prob. 82GPCh. 19 - Prob. 83GPCh. 19 - (a) What is the equivlaent resistance of the...Ch. 19 - Prob. 85GPCh. 19 - Prob. 86GPCh. 19 - Prob. 87GPCh. 19 - In Fig. 19-86, let V= 10.0 V and C1=C2=C3=25.4 F....Ch. 19 - 89. A 12.0-V battery, two resistors, and two...Ch. 19 - Prob. 90GPCh. 19 - Prob. 91GPCh. 19 - Prob. 92GPCh. 19 - Prob. 93GPCh. 19 - Prob. 94GPCh. 19 - The variable capacitance of an old radio tuner...Ch. 19 - Prob. 96GPCh. 19 - Prob. 97GP
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
- Integrated Concepts (a) Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 750-kg electric car be able to supply: (a) To accelerate from rest to 25.0 m/s in 1.00 min? (b) To climb a 2.00 102-m- high hill in 2.00 min at a constant 25.0-m/s speed while exerting 5.00 102 N of force to overcome air resistance and friction? (c) To travel at a constant 25.0-m/s speed, exerting a 5.00 102 N force to overcome air resistance and friction? See Figure 20.44.arrow_forwardAn electric eel generates electric currents through its highly specialized Hunters organ, in which thousands of disk-shaped cells called electrocytes are lined up in series, very much in the same way batteries are lined up inside a flashlight. When activated, each electrocyte can maintain a potential difference of about 150 mV at a current of 1.0 A for about 2.0 ms. Suppose a grown electric eel has 4.0 103 electrocytes and can deliver up to 3.00 102 shocks in rapid series over about 1.0 s. (a) What maximum electrical power can an electric eel generate? (b) Approximately how much energy does it release in one shock? (c) How high would a mass of 1.0 kg have to be lifted so that its gravitational potential energy equals the energy released in 3.00 102 such shocks?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
- Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r = 1,00 . (a) Find the equivalent resistance of the circuit and the current out of the battery. (b) Find the current through each resistor, (c) Find die potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.arrow_forwardIntegrated Concepts (a) An immersion heater utilizing 120 V can raise the temperature of a 1.00 102 -g aluminum cup containing 350 g of water from 20.0°C to 95.0°C in 2.00 min. Find its resistance, assuming it is constant during the process. (b) A lower resistance would shorten the heating time. Discuss the practical limits to speeding the heating by lowering the resistance.arrow_forwardEto sorbe kostoarrow_forward
- roblem 1: An automobile starter motor has an equivalent resistance of 0.035 Ω and is supplied by a 12.0 V battery that has a 0.025 Ω internal resistance Part (a) What current, Г, in amperes, does the battery supply to the motor? a Part (b) What is the terminal voltage, V, in volts, of the motor? ← Part (c) What power, P, in kilowatts, does the motor consume? cos(0) tan() HOME sin cotanO a acos sinh0 4 5 6 atan)acotan(0 cosh tanh0 cotanh0 0 ODegrees Radians BACKSPACE CLEARarrow_forwardGiven that V= J/A-s and 1 Kwh = 3.6 x106 J, what does it cost to operate a window-type air conditioning for one hour if the unit requires a 10-Amp current at 110V and electric energy costs 5 cents per Kwh? Compute the cost at 5.0 cents/Kwh of operating an electric motor that takes 15 Amp at 110V.arrow_forwardWhat is the resistance of a Nichrome wire at 0.0∘C if its resistance is 140.00 Ω at 11.5∘C? (5 significant figures)arrow_forward
- Can someone please explain it to me ASAP??!!!arrow_forwardCalculate the rate of the flashlight’s energy consumption. 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?arrow_forwardA galvanometer has a coil resistance of Rgaly = 41.4 Q. It is to be made into a voltmeter with a full-scale voltage equal to = 115.5 mA, what size additional resistor should V = 155.0 V. If the galvanometer deflects full scale for a current of I galv be used? additional resistor size: Ωarrow_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 LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
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:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Domestic Electric Circuits; Author: PrepOnGo Class 10 & 12;https://www.youtube.com/watch?v=2ZvWaloQ3nk;License: Standard YouTube License, CC-BY