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Solid State Physics | electrons | thermal conduction

  1. Feb 11, 2013 #1
    1. The problem statement, all variables and given/known data
    Explain why electrons carry a net energy but not a net current in the case of thermal conduction.


    2. Relevant equations
    n/a


    3. The attempt at a solution
    n/a

    Please help me understand this!
     
  2. jcsd
  3. Feb 11, 2013 #2

    Simon Bridge

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    Focus on the basics to start with:
    What does "thermal conduction" mean in this case?
    What would a "net current" involve?
     
  4. Feb 11, 2013 #3
    I believe thermal conduction means the transition of thermal heat via the electron gas, and net current would be the obvious: dI/dt
     
  5. Feb 11, 2013 #4

    Simon Bridge

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    ##dI/dt## would be the rate of change of net current. A net current would be ##I=dQ/dt## But what does that mean in terms of the motion of electrons? Why "net" current - why not just "current"?

    What does "thermal conduction" mean in terms of the motion of electrons?
    Why "net" energy? Why not just say they "carry energy"?
     
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