Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 25, Problem 1ASA
To determine
Whether the resistance of all the substances increases with temperature or not.
Expert Solution & Answer
Answer to Problem 1ASA
The electric resistance of a substance changes with the change in temperature.
Explanation of Solution
With the changes in temperature of a substance, the electric resistance of the substance also changes. The change in resistance of a substance is directly proportional to the temperature change. The resistance-dependent temperature is typically expressed as coefficient of resistance.
Conclusion:
Material resistance doesn't need to increase with temperature rise. Some metals are responsive to temperature rise whereas certain materials, like carbon, show decreased resistance to temperature rises.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
How does the resistance of a metallic wire depend on its
temperature? Explain with reason.
Using the atomic model of matter, explain why the resistance of a metal varies with its temperature.
The resistance of a wire increases by 22 percent when the temperature of the wire is increased from 10 degrees C to 105 degrees C. What is the temperature coefficent (a) of the wire's material?
Chapter 25 Solutions
Physics Laboratory Experiments
Ch. 25 - Prob. 1ASACh. 25 - Prob. 2ASACh. 25 - Distinguish between a positive and a negative...Ch. 25 - Are the of a metal conductor and the of a...Ch. 25 - What are the circuit conditions when a Wheatstone...Ch. 25 - Prob. 6ASACh. 25 - What is the value of for copper in terms of...Ch. 25 - Prob. 3QCh. 25 - Prob. 4QCh. 25 - Prob. 5Q
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
- When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T T0)] (Eq. 17.7), where is the temperature coefficient of resistivity. (a) Show that a more precise result, which includes the length and area of a wire change when it is heated, is R=R0[1+(TT0)][1+(TT0)][1+2(TT0)] where is the coefficient of linear expansion. (See Topic 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0C and heated to 100.0C.arrow_forwardUse the atomic theory of matter to explain why the resistance of a material should increase as its temperature increases.arrow_forwardResistors are commonly rated at 18W,14W,12W ,1 W and 2 W for use in electrical circuits. If a current of1 = 2.00 A is accidentally passed through a R=1.00 resistor rated at 1 W, what would be the most probable outcome? Is there anything that can be done to prevent such an accident?arrow_forward
- Review. When a straight wire is warmed, its resistance is given by R = R0,[1 + a(T T0)] according to Equation 27.20, where a is the temperature coefficient of resistivity. This expression needs to be modified if we include the change in dimensions of the wire due to thermal expansion. For a copper wire of radius 0.100 0 mm and length 2.000 m, find its resistance at 100.0C, including the effects of both thermal expansion and temperature variation of resistivity. Assume the coefficients are known to four significant figures.arrow_forwardWhat is the resistance of a wire made of a material with a resistivity of 3.2 x 10 -8 12 m if its length is 2.5 m and its diameter is 0.50 mm?arrow_forward. Certain material has a resistance of 200 m2 at 20°C if the temperature coefficient of resistance for the material is 0.004°C-1 what will be its resistance at 1200°C?arrow_forward
- A copper wire of length 25 m has a resistance of 0.55 Q at 20°C. a) What is the radius of the wire? b) What is the resistance of the same wire at a temperature of 80°C? c) At what temperature the resistance of the wire will be doubled from that 20°C?arrow_forwardA 5-meter-long conductor with diameter of 5mm is connected to a source and an external resistance. The temperature of the conductor changes from 25 degrees to 35 degrees. Determine the resistivities and resistances at each temperature. Thermal coefficient of the conductor is 40 x 10-³and the conductivity at 20°C is 2.5465 x 10 4 per ohm-meterarrow_forwardA certain lightbullb has a tungsten filament with a resistance of 22.4 N when at 20.0°C and 143 N when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament. 1871.44874605x Your response differs from the correct answer by more than 10%. Double check your calculations.°Carrow_forward
- S تر A bronze alloy has a resistivity of 13 x 10-6 2 cm. A piece is cut in the shape of a cuboid (right- angled box shape), 13 mm thick by 15 mm wide by 30 mm long. a) Calculate the resistance R and the conductance G of the cuboid measured over its length. b) Calculate the resistance R and the conductance G of the cuboid measured across its width. 2 2arrow_forward1. Two cylindrical bars, each with diameter of 2.20 cm, are welded together end to end. One of the original bars is copper and is 0.380 m long. The other bar is iron and is 0.190 m long. What is the resistance between the ends of the welded bar at 20°C? (The resistivity of copper and iron can be obtained from the textbook) Ωarrow_forwardR3arrow_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
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
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
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning