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Pure carbon and graphite have the same resistivity?

  1. Oct 20, 2009 #1
    I am just wondering if pure carbon and graphite have the same resistivity?

    Resistivity for pure carbon = 3.5 x 10^-3Ωm:frown:
     
  2. jcsd
  3. Oct 20, 2009 #2
    Re: Resistance

    I'd have to guess no on that one. Graphite is an allotrope of Carbon, so it's crystal structure is different to pure carbon, just like diamond which is another allotrope of cabon and which has a very high resistivity.

    You'd have to do a search for graphite resistance and I think you should check a typo on your units mOhm, not Ohmm
     
  4. Oct 20, 2009 #3

    Vanadium 50

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    Re: Resistance

    No, Ωm is correct. This is resistivity, not resistance.

    Since graphite is carbon, it's difficult to understand the question. Graphite does, however, have different resistivities in different orientations.
     
  5. Oct 20, 2009 #4
    Re: Resistance

    ahh, doh! but resisitivity is a function of the resistance, and hence, I would still assume that different allotropes of carbon have different resistances and resistivities.
     
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