10. An electric power station that operates at 15 kV and uses a 20:1 step-up ideal transformer is producing 300 MW (Mega-Watt) of power that is to be sent to a big city which is located 220 km away with only 1.0% loss. What is the resistance the TWO wires that are being used?

10. An electric power station that operates at 15 kV and uses a 20:1 step-up ideal transformer is producing 300 MW (Mega-Watt) of power that is to be sent to a big city which is located 220 km away with only 1.0% loss. What is the resistance the TWO wires that are being used?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

10. An electric power station that operates at 15 kV and uses a 20:1 step-up ideal transformer is producing 300 MW (Mega-Watt)
of power that is to be sent to a big city which is located 220 km away with only 1.0% loss. What is the resistance of the TWO
wires that are being used?
Ω
19 o0

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Your laptop has wireless communications connectivity, and you might even have a wireless keyboard or mouse. But there’s one wire you haven’t been able to get rid of yet—the power cord.Researchers are working on ways to circumvent the need for a direct electrical connection for power, and they are experiencing some success. Recently, investigators were able to use current flowing through a primary coil to power a 60 W lightbulb connected to a secondary coil 2.0 m away, with approximately 15% efficiency. The coils were large and the efficiency low, but it’s a start. The wireless power transfer system is outlined in Figure VI.2. An AC supply generates a current through the primary coil, creating a varying magnetic field. This field induces a current in the secondary coil, which is connected to a resistance (the lightbulb) and a capacitor that sets the resonance frequency of the secondary circuit to…