A 205-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.05 x 10⁹ resistance. (a) What is the resistance to ground of 40 of these insulators? (Assume the insulators are connected in parallel.) Ω (b) Calculate the power dissipated by 40 of them. W (c) What fraction of the power carried by the line is this? Ptotal

A 205-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.05 x 10⁹ resistance. (a) What is the resistance to ground of 40 of these insulators? (Assume the insulators are connected in parallel.) Ω (b) Calculate the power dissipated by 40 of them. W (c) What fraction of the power carried by the line is this? Ptotal

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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Question

A 205-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a
1.05 x 10⁹ resistance.
(a) What is the resistance to ground of 40 of these insulators? (Assume the insulators are connected in parallel.)
Ω
(b) Calculate the power dissipated by 40 of them.
W
(c) What fraction of the power carried by the line is this?
Ptotal
=

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