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.
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.
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...
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![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?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F86e98964-9a48-452e-bd4e-a22c8976527e%2F16c548bc-6c88-49c5-a861-aa29ac70535c%2F5gjkzjn_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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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