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What is the maximum electric field in the system?

  1. Jul 24, 2008 #1
    1. The problem statement, all variables and given/known data

    Two parallel plates are connected to a constant electrostatic potential.
    Half the space between the plates is filled whit air, one quarter whit a conductor and the fourth quarter whit a dielectric whit realtive permittivity of 80. What is the maximum electric field in the system?


    2. Relevant equations

    Between the plates [tex] E = \frac{V}{d} [/tex] V = potential difference and d = distance between plates.

    3. The attempt at a solution

    Well first I think that the air will "break" first. I do also think that I need to calculate the flux density first, however Im not sure how to procced
     
  2. jcsd
  3. Jul 29, 2008 #2
    Re: dielectric

    I posted a picture at the problem...anyway how do I begin to calculate the electric field? Just to use E = V/d doesnt cut it, I need to incorporate the dielectric constants also

    [​IMG]
     
  4. Jul 29, 2008 #3
    Re: dielectric

    It's just two capacitors in series.. one with dielectric and one without (and different dimensions).
     
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