An aluminium wire 6.6 m long is connected in parallel with a copper wire 5 m long. When a current of 7 A is passed through the combination, it is found that current in the aluminium wire is 3 A. The diameter of aluminium wire is 1 mm. Determine the diameter of copper wire. Resistivity of copper is 0.017Qm and that of aluminium is 0.028 am.

An aluminium wire 6.6 m long is connected in parallel with a copper wire 5 m long. When a current of 7 A is passed through the combination, it is found that current in the aluminium wire is 3 A. The diameter of aluminium wire is 1 mm. Determine the diameter of copper wire. Resistivity of copper is 0.017Qm and that of aluminium is 0.028 am.

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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