A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm² 0 °C, passes a current of 7.9 A when connected to d.c. supply at 240 V. Calculate (a) resistivity of the wire, (b) the current which will flow when the temperature rises to 55 °C . The at temperature of temperature coefficient of the resistance wire is 0.00029 / °C.
A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm² 0 °C, passes a current of 7.9 A when connected to d.c. supply at 240 V. Calculate (a) resistivity of the wire, (b) the current which will flow when the temperature rises to 55 °C . The at temperature of temperature coefficient of the resistance wire is 0.00029 / °C.
College Physics
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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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![Q1/ A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm? at temperature of
0°C, passes a current of 7.9 A when connected to d.c. supply at 240 V. Calculate (a) resistivity
of the wire, (b) the current which will flow when the temperature rises to 55 °C. The
temperature coefficient of the resistance wire is 0.00029 / °C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F16f09a6e-4b62-40b5-bac2-11f5c26d94c4%2Fca81f892-8ae9-442f-b83f-e15660497493%2F164gybw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1/ A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm? at temperature of
0°C, passes a current of 7.9 A when connected to d.c. supply at 240 V. Calculate (a) resistivity
of the wire, (b) the current which will flow when the temperature rises to 55 °C. The
temperature coefficient of the resistance wire is 0.00029 / °C.
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