1 and 2 March 31, 2022 at 10:19 AM1. An unknown alloy is subjected to an electric field of 25 V/m, and has a current density of 1.45 X 10 9 A/m2.What is the metal's resistivity?2. A copper-nickel alloy called constantan has a resistance of 8.55 X 10 4 mQ at 20.0 °C. What is its resistanceif it is subjected to a temperature of 1500.0 °C? Assume that Equation for resistance is applicable at veryhigh temperature change.3. The temperature dependence of metal makes it possible for it to be used as a resistance thermometer, whichinvolves platinum. Platinum has a resistance of 50.0 0 at 20.0 °C. When it is immersed in a melting metalindium, its resistance increases to 7.68 X 10 4 mn. What is the melting point of indium in Kelvin?

Answer:- Given Electric field (E) = 25 V/m Current density (J) = 1.45 × 109 A/m2 Resistivity (p)…

March 31, 2022 at 10:19 AM 1. An unknown alloy is subjected to an electric field of 25 V/m, and has a current density of 1.45 X 10 9 A/m2. What is the metal's resistivity? 2 A cor per nickel alloy called conctantan bac g cocictan ce of 8 55Y 10 A moat 20.0 9C What ic ite rocictance

March 31, 2022 at 10:19 AM 1. An unknown alloy is subjected to an electric field of 25 V/m, and has a current density of 1.45 X 10 9 A/m2. What is the metal's resistivity? 2 A cor per nickel alloy called conctantan bac g cocictan ce of 8 55Y 10 A moat 20.0 9C What ic ite rocictance

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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

1 and 2

March 31, 2022 at 10:19 AM
1. An unknown alloy is subjected to an electric field of 25 V/m, and has a current density of 1.45 X 10 9 A/m2.
What is the metal's resistivity?
2. A copper-nickel alloy called constantan has a resistance of 8.55 X 10 4 mQ at 20.0 °C. What is its resistance
if it is subjected to a temperature of 1500.0 °C? Assume that Equation for resistance is applicable at very
high temperature change.
3. The temperature dependence of metal makes it possible for it to be used as a resistance thermometer, which
involves platinum. Platinum has a resistance of 50.0 0 at 20.0 °C. When it is immersed in a melting metal
indium, its resistance increases to 7.68 X 10 4 mn. What is the melting point of indium in Kelvin?

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