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How does a dielectric increase maximum electric field strength?

  1. Aug 16, 2014 #1
    1. The problem statement, all variables and given/known data

    How does a dielectric increase maximum electric field strength?

    From the two cases where a dielectric is inserted into a charged capacitor after it is disconnected and after it is remained connected it seems that E will either decrease or stay the same. But I read in just a few pages later that "The presence of a dielectric increases this maximum electric field strength" and I was confused as it contradicts the two cases of inserting a dielectric in which electric field strength would either decrease or stay the same.
     
  2. jcsd
  3. Aug 17, 2014 #2

    Simon Bridge

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    Context is important.
    You need to check what the book is calling "maximum electric field strength".

    I suspect sloppy wording.
     
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