A generating station is producing 1.1 x 10° W of power that is to be sent to a small town located 7.5 km away. Each of the two wires that comprise the transmission line has a resistance per length of 3.1 x 10-2/km. (a) Find the power lost in heating the wires if the power is transmitted at 1400 V. (b) A 100:1 step-up transformer is used to raise the voltage before the power is transmitted. How much power is now lost in heating the wires?

A generating station is producing 1.1 x 10° W of power that is to be sent to a small town located 7.5 km away. Each of the two wires that comprise the transmission line has a resistance per length of 3.1 x 10-2/km. (a) Find the power lost in heating the wires if the power is transmitted at 1400 V. (b) A 100:1 step-up transformer is used to raise the voltage before the power is transmitted. How much power is now lost in heating the wires?

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

Chapter23: Faraday’s Law And Inductance

Section: Chapter Questions

Problem 8CQ

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