A 170-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.05 109 Ω resistance. (a) What is the resistance to ground of 60 of these insulators? (Assume the insulators are connected in parallel.) (b) Calculate the power dissipated by 60 of them. (c) What fraction of the power carried by the line is this?

A 170-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.05 109 Ω resistance. (a) What is the resistance to ground of 60 of these insulators? (Assume the insulators are connected in parallel.) (b) Calculate the power dissipated by 60 of them. (c) What fraction of the power carried by the line is this?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 19P

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