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Dielectrical constant / relative permittivity

  1. Mar 21, 2007 #1
    Hi!

    Im woundering if the relative permittivity in a capacitor is dependent on
    the level of charge in the capacitor?

    /Nikke.
     
  2. jcsd
  3. Mar 21, 2007 #2

    Dick

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    The charge on the capacitor affects the E field through the dielectric. In an ideal capacitor the permittivity is independent of field. Real devices have some degree on nonlinearity (eg at high voltages they will simply break down).
     
  4. Mar 21, 2007 #3
    ok cool, thats what i thought.

    cheers
     
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