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Math Help - calculate power

  1. #1
    hks
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    calculate power

    hi...like to find out how do i go about calculating power if the current and resistance are changing with temperature as it rises?
    thks
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by hks View Post
    hi...like to find out how do i go about calculating power if the current and resistance are changing with temperature as it rises?
    thks
    P = \frac{V^2}{R}
    (I'm assuming the potential of the source doesn't change.)

    See here for how temperature affects resistance. (You might want to look up the term "resistivity" as well.)

    -Dan
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