Q1: A copper cable is 2 km long and has across-sectional area of 10 mm?. Find its resistance at 80°C if at 20oC the resistivity of copper is 0.02×10–6 Q.m and its temperature coefficient of resistance is 0.004/•C.
Q1: A copper cable is 2 km long and has across-sectional area of 10 mm?. Find its resistance at 80°C if at 20oC the resistivity of copper is 0.02×10–6 Q.m and its temperature coefficient of resistance is 0.004/•C.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter3: Transient Heat Conduction
Section: Chapter Questions
Problem 3.4P
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Q1: A copper cable is 2 km long and has across-sectional area of 10 mm². Find its resistance at 80°C if at 20C the resistivity of copper is 0.02x10-6 2.m and its temperature coefficient of resistance is 0.004/•C.
![Q1: A copper cable is 2 km long and has across-sectional area of 10 mm². Find
its resistance at 80°C if at 20•C the resistivity of copper is 0.02×10–6 Q.m and
its temperature coefficient of resistance is 0.004/•C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1b1a115b-19af-4f4c-911b-666e2d21c355%2Fbe1c3cf0-f2c3-40a4-9f4b-2a90b9897394%2Fllx5ljh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1: A copper cable is 2 km long and has across-sectional area of 10 mm². Find
its resistance at 80°C if at 20•C the resistivity of copper is 0.02×10–6 Q.m and
its temperature coefficient of resistance is 0.004/•C.
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