A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (ρρAI=2.82 x 10-8ohm.m ; ααAI = 3.9 x 10-3/°C; ρρhichrome = 2.50 x 10-6 m ; ααnichrome =0.40 x 10-3 / °C.) The ratio of the temperature change of the nichrome wire to thetemperature change of the aluminum wire is Select one: a. 10 b. 9.75 c. 0.1 d. 1

A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (ρρAI=2.82 x 10-8ohm.m ; ααAI = 3.9 x 10-3/°C; ρρhichrome = 2.50 x 10-6 m ; ααnichrome =0.40 x 10-3 / °C.) The ratio of the temperature change of the nichrome wire to thetemperature change of the aluminum wire is Select one: a. 10 b. 9.75 c. 0.1 d. 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 27.73AP

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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

A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (ρρ_AI=2.82 x 10^-8ohm.m

; αα_AI = 3.9 x 10^-3/°C; ρρ_hichrome = 2.50 x 10^-6 m

; αα_nichrome =0.40 x 10^-3 / °C.) The ratio of the temperature change of the nichrome wire to thetemperature change of the aluminum wire is

Select one:

a. 10

b. 9.75

c. 0.1

d. 1

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