Register - Log In


FunTrivia Homepage


  • New Questions

  • Unanswered


  • Post a Question

    • Goto Qn #




    Archives

    Why is voltage so high in power lines?

    Question #112449. Asked by rfcneil. (Jan 28 10 12:48 PM)


    looney_tunes

    		"Electricity is transmitted at high voltages (110 kV or above) to reduce the energy lost in long distance transmission. ... Transmission efficiency is improved by increasing the voltage using a step-up transformer, which reduces the current in the conductors, while keeping the power transmitted nearly equal to the power input. The reduced current flowing through the line reduces the losses in the conductor. According to Joule's Law, energy losses are directly proportional to the square of the current. Thus, reducing the current (amperage) by a factor of 2 will lower the energy lost to conductor resistance by a factor of 4."

    http://en.wikipedia.org/wiki/Electric_power_transmission

    Jan 28 10, 1:15 PM

    Find something useful here? Please help us spread the word about FunTrivia. Recommend this page below!


    Sign up to see all responses!

    Create a Free ID instantly to see all recent responses, post your own follow-ups or questions, and access over 1,000,000 trivia questions!

    Choose a User Name:
    Your Email Address:
    Choose a Password:

    I agree by the terms outlined in FunTrivia's Conditions of Use




    Other Similar Questions & Answers


    Banks of capacitors are sometimes installed on low-voltage power lines served by a local transformer station. What is their purpose?

    If I were to place two 10 megohm resistors in series across a voltage supply, and measure the voltage drop across each with a single voltmeter, the sum of the measured voltage drops will always be less than the source voltage. How is this possible given Kirchoff's voltage law?

    Who are the actors in the electric 6 danger high voltage video?

    Suggested Related FunTrivia Quizzes - 90,000 currently online

    1 And 'So' On
    The answers to the following questions all contain the word 'so' somewhere in the middle. Can you work out the answer from the clues given?
    		Words in Common Average
    10 Q
    rossian
    Nov 20 10
    186 plays
    2 High Voltage
    Hello everyone. I plan on make a quiz on every international album AC/DC has released. I will start with "High Voltage", and then go to "Dirty Deeds", then "Let There Be Rock", then "Powerage", then... well I think you got it.
    		AC-DC Tough
    15 Q
    ACDC58
    Aug 14 10
    180 plays
    3 Power Corrupts
    From history to the present, and from fiction to non-fiction, what do you know about these people who let power go to their heads?
    		World History Average
    10 Q
    albinerhawk
    Apr 17 09
    3000 plays




    "Ask FunTrivia" is for entertainment purposes only, and answers offered are unverified and unchecked by FunTrivia. We cannot guarantee the accuracy or veracity of ANY statement posted. Feel free to post an updated response if you feel that an answer is inadequate or incorrect. Please thoroughly research items where accuracy is important to you using multiple reliable sources. By accessing our website, you agree to be bound by our terms of service.