Note : All questions have the same weight. QI/A) What is the resistance of a copper wire 75 m long and 2 mm in diameter (at T= 40°C)? If the resistivity of copper at 20°C is ( 1.723 x 10-8 Nm ) and the Temperature coefficient of copper at 20°C is (0.00393 °C-). itch is closed at t=0 s.

Note : All questions have the same weight. QI/A) What is the resistance of a copper wire 75 m long and 2 mm in diameter (at T= 40°C)? If the resistivity of copper at 20°C is ( 1.723 x 10-8 Nm ) and the Temperature coefficient of copper at 20°C is (0.00393 °C-). itch is closed at t=0 s.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

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