(a)Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a resistance of 18.0 N at20.0°C?O leadcopperO aluminumO silver(b) What is its resistance (in 2) at 130°C?

Given: The length of the wire is 20 m. The diameter of the wire is 0.15 mm. The resistance of the…

(a) Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a resistance of 18.0 0 at 20.0°C? O lead copper O aluminum O silver (b) What is its resistance (in a) at 130°C?

(a) Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a resistance of 18.0 0 at 20.0°C? O lead copper O aluminum O silver (b) What is its resistance (in a) at 130°C?

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.

Question

(a)
Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a resistance of 18.0 N at
20.0°C?
O lead
copper
O aluminum
O silver
(b) What is its resistance (in 2) at 130°C?

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