What is the change in a copper wire's resistivity when its temperature increases to 45°C from room temperature (20°C)?Po = 1.78 x 10-8 2•ma = 3.9 x 10-3 (1/°C) Practice Problem 6What is the change in a copper wire's resistivitywhen its temperature increases to 45°C fromroom temperature (20°C)?Po = 1.78 x 10-8 Q.mα = 3.9 x 10-³ (1/°C)-3

Initial resistivity, ρo = 1.78×10-8 ΩmCoefficient of expansion, α = 3.9×10-3 (1/°C)Temperature…

Answered: What is the change in a copper wire's…

What is the change in a copper wire's resistivity when its temperature increases to 45°C from room temperature (20°C)? Po = 1.78 x 10-8 Q.m a = 3.9 x 10-³ (1/°℃)

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.5CQ: How does the resistance for copper and for silicon change with temperature? Why are the behaviors of...

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

What is the change in a copper wire's resistivity when its temperature increases to 45°C from room temperature (20°C)?

Po = 1.78 x 10-8 2•m

a = 3.9 x 10-3 (1/°C)

Practice Problem 6
What is the change in a copper wire's resistivity
when its temperature increases to 45°C from
room temperature (20°C)?
Po = 1.78 x 10-8 Q.m
α = 3.9 x 10-³ (1/°C)
-3

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