Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 38, Problem 5P
To determine
The reason for the resistivity of copper decreases more than that of brass at
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
2) a) A 40-m length of copper wire at 20 deg c has a diameter of 0.3 mm. If a potential
difference of 10 V is applied accross the length of the wire, determine the current in the wire
b) If the wire is heated to 40 deg C while the 10-V potential is maintained, what is the
resulting current in the wire?
A copper wire 100m long with cross-sectional area of 2x10-4 cm2 is heated from room temperature of 25 C to 200 C. Find
The drift speed of the “electron group” in the wire, if the current is 3A and density of electrons is 8.5x1028 electrons /m3
The voltage drop across the wire resistor for this current of 3A
The power dissipated by resistor.
A new material is found to be superconducting below 77 K. How much resistance will a 75 mm long sample of this material have if it is at a temperature of 69.3 K while connected to a 6.4 V AC-power supply?
R =
How much thermal energy will it generate?Thermal energy generated =
Chapter 38 Solutions
Physics for Scientists and Engineers, Vol. 1
Ch. 38 - Prob. 1PCh. 38 - Prob. 2PCh. 38 - Prob. 3PCh. 38 - Prob. 4PCh. 38 - Prob. 5PCh. 38 - Prob. 6PCh. 38 - Prob. 7PCh. 38 - Prob. 8PCh. 38 - Prob. 9PCh. 38 - Prob. 10P
Ch. 38 - Prob. 11PCh. 38 - Prob. 12PCh. 38 - Prob. 13PCh. 38 - Prob. 14PCh. 38 - Prob. 15PCh. 38 - Prob. 16PCh. 38 - Prob. 17PCh. 38 - Prob. 18PCh. 38 - Prob. 19PCh. 38 - Prob. 20PCh. 38 - Prob. 21PCh. 38 - Prob. 22PCh. 38 - Prob. 23PCh. 38 - Prob. 24PCh. 38 - Prob. 25PCh. 38 - Prob. 26PCh. 38 - Prob. 27PCh. 38 - Prob. 28PCh. 38 - Prob. 29PCh. 38 - Prob. 30PCh. 38 - Prob. 31PCh. 38 - Prob. 32PCh. 38 - Prob. 33PCh. 38 - Prob. 34PCh. 38 - Prob. 35PCh. 38 - Prob. 36PCh. 38 - Prob. 37PCh. 38 - Prob. 38PCh. 38 - Prob. 39PCh. 38 - Prob. 40PCh. 38 - Prob. 41PCh. 38 - Prob. 42PCh. 38 - Prob. 43PCh. 38 - Prob. 44PCh. 38 - Prob. 45PCh. 38 - Prob. 46PCh. 38 - Prob. 47PCh. 38 - Prob. 48PCh. 38 - Prob. 49PCh. 38 - Prob. 50PCh. 38 - Prob. 51PCh. 38 - Prob. 52PCh. 38 - Prob. 53PCh. 38 - Prob. 54PCh. 38 - Prob. 55PCh. 38 - Prob. 56PCh. 38 - Prob. 57PCh. 38 - Prob. 58PCh. 38 - Prob. 59PCh. 38 - Prob. 60PCh. 38 - Prob. 61PCh. 38 - Prob. 62PCh. 38 - Prob. 63PCh. 38 - Prob. 64PCh. 38 - Prob. 65PCh. 38 - Prob. 66PCh. 38 - Prob. 67PCh. 38 - Prob. 68PCh. 38 - Prob. 69PCh. 38 - Prob. 70PCh. 38 - Prob. 71PCh. 38 - Prob. 72PCh. 38 - Prob. 73PCh. 38 - Prob. 74PCh. 38 - Prob. 75PCh. 38 - Prob. 76P
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
- Iron has a resistivity of 9.71×108 m at 20°C. What will the resistivity of Lead when then temperature is increased to 135°C. (Take a as 6.51×10³)arrow_forwardChoose the correct alternative:(a) Alloys of metals usually have (greater/less) resistivity than that of their constituent metals.(b) Alloys usually have much (lower/higher) temperature coefficients of resistance than pure metals.(c) The resistivity of the alloy manganin is nearly independent of/ increases rapidly with increase of temperature.(d) The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of the order of (1022/1023).arrow_forwardTwo new materials have been discovered. One is shinyand has a metallic look, while the other is dull andhas a non-metallic look. Although you think that oneis a conductor and the other an insulator, you wantto be certain. Describe a test you could do to test theconductivity of these two materials.arrow_forward
- A copper wire is 10 cm long and has a cross-sectional area of 0.4 mm^2 and the resistance of the wire is 0.4 ohms. The wire is connected to a source with a voltage of 10 v, what is the movement, knowing that the density of conduction electrons for copper is 8.5 x 10^28 m^-3 8.5 x 10^4 63-5 For the same wire in the previous question, what is the fersi level if the atomic weight of copper is 0.5 x 10^(-5) 0.94 x 10^(-4) 7.03| ev 0.36 x 10^(-4) 7.01eV 7.05 eV 7.021 evarrow_forwardQʻ: Calculate the drift velocity and mean free path of copper when it carries a steady current of 10 amperes and whose radius is 0.08 cm. Assume that the mean thermal velocity 1.6 x 10° m/s and the resistivity of copper 2 x 10° marrow_forwardA Cu wire of diameter of 2 mm and length of 1 m initially at room temperature of 300 K is applied a constant voltage difference of 100 V for 1000 seconds. The temperature of the wire rose due to Joule heating during the application of the voltage, so one waited for a sufficiently long time after the voltage is removed for the wire to cool back to the room temperature of 300 K. The conductivity of Cu is 6×107S/m. Please answer the following questions, assuming the surroundings is at room temperature 300 K: (a) What is the internal energy change for the wire from the very initial state to the final state after the entire process ends? (b) What is the internal energy change for the surroundings for the entire process? (c) What is the amount of heat that was generated in the wire and transferred to the surroundings during the entire process? (d) What is the total internal energy change of the wire plus the surroundings during the entire process? (e) What is the entropy change for the wire…arrow_forward
- In a normal conductor heat is generated at a rate I 2R. Therefore a current-carrying conductor must dissipate heat effectively or it can melt or overheat the device in which it is used. Consider a long cylindrical copper wire (resistivity 1.72x 10-8 Ω*m) of diameter 0.75 mm. If the wire can dissipate 80 W/m2 along its surface, what is the maximum current this wire can carry?arrow_forwardA 5 °C rise in temperature is observed in a conductor by passing a current. When the current is doubled, the rise in temperature will be ?arrow_forwardThe resistance of a copper wire increases by a factor of 1.32 when current flows through the wire compared to its resistance when no current flows and its temperature is 0°C. Calculate what is its temperature when the current flows?arrow_forward
- 2. a) The resistivity of copper is 1.7241 x 10-8 (22-m) at 20°C. What is the conductivity of copper at 27°C in units of (0-m)-¹ and (0-cm)-1 if the temperature coefficient of resistivity of copper is 3.9 x 10-³/°C? b) Explain the change of conductivity with temperature. 2 For carbon: - 35 x 10-50-m and g --50 x 10-4 1°Carrow_forwardResistivity in metals increases with temperature according to the equation: ρ(T) = ρ0[1 + α(T - T0)] where α is the temperature coeficcient of restivity, and ρ0 is the restivity at the reference temperature T0. For a particular wire, the temperature coeficcient of restivity is α = 3.83 X 10-3 °C-1, and the restivity is ρ0 = 7.71 X 10-7 Ωm at the reference temperature T0 = 297°C. Find an expression for the temperature T2, at which the resistance of a particular wire will be twice as high as it is at the reference temperature T0. (Both temperatures are in degrees Celsius) Use this expression to find the temperature in degrees Celsius for T2. If the wire has a length of 1.00m and it has a circular cross section with a radius of 1.00cm, what is the resistance in ohms, at a temperature which is twice the reference temperature, T = 2T0 ?arrow_forwardA tungsten wire in a vacuum has length 15.0 cm andradius 1.00 mm. A potential difference is applied across it.(a) What is the resistance of the wire at 293 K? (b) Supposethe wire reaches an equilibrium temperature such that itemits 75.0 W in the form of radiation. Neglecting absorptionof any radiation from its environment, what is the temperatureof the wire? (Note: e = 0.320 for tungsten.) (c) What isthe resistance of the wire at the temperature found in part(b)? Assume the temperature changes linearly over this temperaturerange. (d) What voltage drop is required across thewire? (e) Why are tungsten lightbulbs energetically inefficientas light sources?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction 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 Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College 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
Ohm's law Explained; Author: ALL ABOUT ELECTRONICS;https://www.youtube.com/watch?v=PV8CMZZKrB4;License: Standard YouTube License, CC-BY