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    xx_sarah_xx's Avatar
    xx_sarah_xx Posts: 2, Reputation: 1
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    #1

    Feb 15, 2006, 12:21 PM
    Coursework for my GCSE's
    Hi I'm doing some coursework for my GCSE's at the moment and I was wondering if you could send me a detailed summary about the resistance in a wire when the length is changed. I already know that resistance doubles etc. but is there anything else? Please HELP!!
    unclejohnny's Avatar
    unclejohnny Posts: 70, Reputation: 2
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    #2

    Feb 15, 2006, 02:44 PM
    Resistance in the wire doubles when length increases, resistance halves when length decreases. Resistance is also based on how much current is flowing at the time, more current, less resistance. AKA more push
    caibuadday's Avatar
    caibuadday Posts: 460, Reputation: 10
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    #3

    Feb 16, 2006, 04:28 PM
    Quote Originally Posted by xx_sarah_xx
    Hi im doing some coursework for my GCSE's at the moment and i was wondering if you could send me a detailed summary about the resistance in a wire when the length is changed. i already know that resistance doubles etc. but is there anything else?? please HELP!!!
    temperature...
    xx_sarah_xx's Avatar
    xx_sarah_xx Posts: 2, Reputation: 1
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    #4

    Feb 18, 2006, 04:34 AM
    What do you mean? caibuadday? Thank you unclejohnny
    fredg's Avatar
    fredg Posts: 4,926, Reputation: 674
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    #5

    Feb 18, 2006, 07:17 AM
    Hi, Sarah,
    Here is a link:
    http://hyperphysics.phy-astr.gsu.edu...ric/resis.html

    It has a good explanation of wire resistance, equations, and some info about the Coefficient of Temperature, which is different for different wire material.
    Best of luck, and have a great day.
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