A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of 3.50 Q at 20.0°C. What diameter wire must be used? (The resistivity of aluminum at 20.0°C is 2.82 x 10-8 Q m.) mm Need Help? Read It

A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of 3.50 Q at 20.0°C. What diameter wire must be used? (The resistivity of aluminum at 20.0°C is 2.82 x 10-8 Q m.) mm Need Help? Read It

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 42P: What current flows through a 2.54-cm-diameter rod of Pure silicon that is 20.0 cm long, when 1.00103...

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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.

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A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of 3.50 Q at 20.0°C. What diameter
wire must be used? (The resistivity of aluminum at 20.0°C is 2.82 x 10-8 Q · m.)
mm
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