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Finding length and diameter of wire

  1. Feb 18, 2010 #1
    Suppose you wish to fabricate a uniform wire out of 1.0 g of copper (Density of copper is 8.93 x 10^3 kg/m^3). If the wire is to have a resistance of R = .5 ohms, and all the copper is to be used, what will

    a) the length and
    b) the diameter of this wire?




    R = .5
    a weight of 1.0 grams. how am i suppoise to find length and diameter (im assuming cross sectional) of the wire with only given these 3 variables??
     
  2. jcsd
  3. Feb 18, 2010 #2
    You'll probably also need to look up the resistivity of copper
     
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