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Math Help - resistance of wires

  1. #1
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    resistance of wires

    do u think long or short wires have the higheset resistance explain why?

    that was part 1 of the question
    part 2 is:what will you measure to find outwhich wires have the highest resistance?
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  2. #2
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    Resistance in wires is like friction as water flows through a river- the longer the river, the more the friction.
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  3. #3
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    Quote Originally Posted by Blademaster View Post
    do u think long or short wires have the higheset resistance explain why?

    that was part 1 of the question
    part 2 is:what will you measure to find outwhich wires have the highest resistance?
    Any science textbook discussing electricity will give you the answers. And look what you can find using Google (it took me 67 seconds):

    Electrical Resistance

    ScI-Journal | What Factors Affect the Resistance of a Wire? (1)

    Resistance and Resistivity
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    Senior Member vincisonfire's Avatar
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    A short wire has a higher resistance than a longer one for the simple reason that electrons have to go through a longer piece of wire. Else, we would try to make wire as long as possible everywhere. We see that it is the opposite indeed.
    The length but also the diameter of a wire is important.
    The material of it is also a relevant parameter.
    Actually, we observe that it is mainly the electron on the surface that moves and that's why wires are often an assembly of many small wires.
    Finally, I suggest that you post this kind of question on the physics forum.
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  5. #5
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    Quote Originally Posted by vincisonfire View Post
    A short wire has a higher resistance than a longer one for the simple reason that electrons have to go through a longer piece of wire. Else, we would try to make wire as long as possible everywhere. We see that it is the opposite indeed.
    The length but also the diameter of a wire is important.
    The material of it is also a relevant parameter.
    Actually, we observe that it is mainly the electron on the surface that moves and that's why wires are often an assembly of many small wires.
    Finally, I suggest that you post this kind of question on the physics forum.
    I think you meant to say

    A short wire has a lower resistance than a longer one
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  6. #6
    Senior Member vincisonfire's Avatar
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    Yes that's what I meant.
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