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Why charges travel faster in semiconductor than in metallic conductor?

  1. Jul 24, 2013 #1
    1. The problem statement, all variables and given/known data
    "Use the equation I=nAve to justify why charges travel faster in semiconductor than in metallic conductor. Assume that the dimensions and current are the same. "



    2. Relevant equations
    I=nAve
    I know I = current, n = number density, A= cross sectional area v= drift velocity and e = charge of electrons


    3. The attempt at a solution
    Is metallic conductor denser than semiconductor, hence the drift velocity is lower? Thanks in advance.
     
  2. jcsd
  3. Jul 25, 2013 #2

    Simon Bridge

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  4. Aug 2, 2013 #3
    Thanks a lot.
     
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