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Determine whether germanium is a conductor at a certain frequency

  1. Nov 11, 2013 #1
    1. The problem statement, all variables and given/known data
    Determine, whether germanium (sigma=2.3) is a conductor at the frequency of 2.4 GHz.
    sigma=?(omega)(epsilon)


    2. Relevant equations



    3. The attempt at a solution
    Well I know omega=2∏f and I have f. Thus I could find omega. Given sigma I could find epsilon but what excatly does that tell me about it being a conductor? hen this is done I get epsilon to be 1.526e-10
     
  2. jcsd
  3. Nov 11, 2013 #2
    I could find for a time constant epsilon/sigma and if it is short I will know it is a good conductor is that ok?
     
  4. Nov 12, 2013 #3
    I got the relative epsilon to be 17.24
     
  5. Nov 12, 2013 #4
    ω=2∏f=2∏(2.4x10^9)=1.507x10^10
    σ=2.3
    σ=ωε
    ε=1.526x10^-10
    ε0εr=1.526x10^-10
    εr=(1.526x10^-10)/(8.85x10^-12)=17.24
    my final answer is 17.24 am I good?
     
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