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Get Full Access to College Physics - 1 Edition - Chapter 20 - Problem 69pe
Get Full Access to College Physics - 1 Edition - Chapter 20 - Problem 69pe

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# Unreasonable Results (a) What current is needed to

ISBN: 9781938168000 42

## Solution for problem 69PE Chapter 20

College Physics | 1st Edition

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Problem 69PE

Problem 69PE

Unreasonable Results (a) What current is needed to transmit 1.00×102 MW of power at 480 V? (b) What power is dissipated by the transmission lines if they have a 1.00 - Ω resistance? (c) What is unreasonable about this result? (d) Which assumptions are unreasonable, or which premises are inconsistent?

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Step 1 of 3

Solution 69PE

a.)  The current needed is 2.08 x105 A

b.) The power dissipated is  43.3 GW

c.) The current value and the power dissipation value are very high and unreasonable. Such high value does not reflect the practical values for these quantities.

d.) The assumption which is causing the results in part (a) and (b) to be unreasonable is that the resistance of power transmission line is 1.00. The assumed value of resistance is very low. Such low value of resistance is not possible in a normal power transmission line.

Step 2 of 3

Step 3 of 3

##### ISBN: 9781938168000

The answer to “Unreasonable Results (a) What current is needed to transmit 1.00×102 MW of power at 480 V? (b) What power is dissipated by the transmission lines if they have a 1.00 - ? resistance? (c) What is unreasonable about this result? (d) Which assumptions are unreasonable, or which premises are inconsistent?” is broken down into a number of easy to follow steps, and 50 words. This full solution covers the following key subjects: unreasonable, power, premises, inconsistent, Lines. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The full step-by-step solution to problem: 69PE from chapter: 20 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. College Physics was written by and is associated to the ISBN: 9781938168000. This textbook survival guide was created for the textbook: College Physics , edition: 1. Since the solution to 69PE from 20 chapter was answered, more than 388 students have viewed the full step-by-step answer.

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