A copper coil has a resistance of 200 ohms when its mean temperature is 0 degree centigrade. Calculate the resistance of the coil when its mean temperature is 80 degree centigrade. Temperature coefficient of copper is 0.004041 centigrade-1 a) 264.65 ohm b) 264.65 kilo-ohm c) 286.65 ohm d) 286.65 kilo-ohm

A copper coil has a resistance of 200 ohms when its mean temperature is 0 degree centigrade. Calculate the resistance of the coil when its mean temperature is 80 degree centigrade. Temperature coefficient of copper is 0.004041 centigrade-1 a) 264.65 ohm b) 264.65 kilo-ohm c) 286.65 ohm d) 286.65 kilo-ohm

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter7: Luminaires, Ballasts, And Lamps

Section: Chapter Questions

Problem 15R: A good rule-of-thumb to estimate the expected life of a motor, a ballast, or other electrical...

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