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Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 20 - Problem 69pe
Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 20 - Problem 69pe

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# PE Unreasonable Results (a) What current is needed to

ISBN: 9780130606204 3

## Solution for problem 69PE Chapter 20

Physics: Principles with Applications | 6th Edition

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Problem 69PE

PE Unreasonable Results (a) What current is needed to transmit 1.00×10? MW of 2? 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?

Step-by-Step Solution:

Step-by-step solution Given: Power = 1.00×10 MW Voltage = 480 V Resistance = 1.00 - 6 1 MW = 10 Watt Calculate: Power is dissipated by the transmission lines= Comment on unreasonable,assumptions = Step 1 of 5 Power is defined as the rate at which energy is consumed. The relation for power P, electric current I and voltage V is given by equation (1) P = VI …………………..(1)

Step 2 of 5

Step 3 of 5

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