How do I find field power of Coaxial cable?

Discussion in 'Homework Help' started by thexy, Jan 23, 2016.

  1. thexy

    Thread Starter Member

    Dec 13, 2015
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    It's given in example one coaxial cable, filled inside with dielectric .epsilonr. Inside diameter d, outer diameter D and voltage applied between inner and outer conductors.
    Wanted: field power at a distance r=(D+d)/2?
    [​IMG]

    Can someone help me to this example?
     
  2. WBahn

    Moderator

    Mar 31, 2012
    22,990
    6,884
    Can someone show some work?
     
  3. thexy

    Thread Starter Member

    Dec 13, 2015
    130
    0
    E=F/C
    C=(2*pi*epsilon0)/ln(D/d)

    idk what next
     
  4. sailorjoe

    Active Member

    Jun 4, 2013
    361
    64
    Is F your field power variable?
     
  5. thexy

    Thread Starter Member

    Dec 13, 2015
    130
    0
    Hm no
     
  6. sailorjoe

    Active Member

    Jun 4, 2013
    361
    64
    Ok, so what are the variables E, F, and C, please.
     
  7. WBahn

    Moderator

    Mar 31, 2012
    22,990
    6,884
    What is "field power"? Are you really looking for something measured in watts?
     
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