A power plant is being built that will deliver 400 kw at 79,000 V using a tungsten cable with a resistance of 0.004 N. The cable will span Resistivity (0-m) Material Aluminum 2.65 x 10-8 Copper 1.68 x 10-8 Gold 2.44 x 10 8 A = .077 m^2 Iron 9.71 x 108 power loss = 1025 W Platinum 10.6 x 10-8

A power plant is being built that will deliver 400 kw at 79,000 V using a tungsten cable with a resistance of 0.004 N. The cable will span Resistivity (0-m) Material Aluminum 2.65 x 10-8 Copper 1.68 x 10-8 Gold 2.44 x 10 8 A = .077 m^2 Iron 9.71 x 108 power loss = 1025 W Platinum 10.6 x 10-8

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 19PQ

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Please help me solve the following.I answered it correctly, but have since forgotten the formula. Will be determining the cable's cross-sectional area, and the power loss.

A power plant is being built that will deliver 400 kW at 79,000 V using a tungsten cable with a resistance of 0.004 N. The cable will span 5500 m.
Resistivity
(A-m)
Material
Aluminum
2.65 x 10 8
Copper
1.68 x 10-8
Gold
2.44 x 10-8
A = .077 m^2
Iron
9.71 x 10-8
power loss = 1025 W
Platinum
10.6 x 10 8
Silver
1.59 x 10 8
Tungsten
5.60 x 10-8

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