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Homework Help: Conducting metal

  1. Oct 21, 2003 #1
    Does anybody know off of the top of their head:
    1)The most conducting metal
    2)A conducting metal with the roughest surface (looking for surface area)
    Paden Roder
     
  2. jcsd
  3. Oct 21, 2003 #2

    dduardo

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    pure metal or composite?
     
  4. Oct 21, 2003 #3

    jcsd

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    Off the top of my head:

    1) if your talking about metals and conducters, the classic answer would be copper, if you want to keep things simple stick with his.

    2)Well if you take a metal solid it's 'roughness' is not really a property of the metal you choose, more how it's been worked.
     
  5. Oct 21, 2003 #4
    dduardo-
    both.

    jcsd-thanks

    Paden Roder
     
  6. Oct 21, 2003 #5

    Tom Mattson

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    Ze best conductor, she is silver, not copper.
     
  7. Oct 21, 2003 #6

    dduardo

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    Tom is correct, the pure metal with the highest conductivity is silver

    The standard composite superconductor is NbTi (Niobi-Titanium) at 8K.
     
  8. Oct 22, 2003 #7

    Bystander

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    From Giacoletto:
    @ 273 K
    Ag (five 9s) 0.0147x10-6ohm.m
    Ag ("normal") 0.0150
    Cu (four 9s) 0.0158
    Cu (O free, 99.95) 0.0153
    Au (five 9s) 0.0219
    (all in annealed condition --- cold working raises resistivity)

    14-kt Au(cold worked) 0.0145
    (annealed) 0.0150
     
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