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Plates of capacitors and dielectric constant

  1. May 5, 2015 #1
    In my textbook it is written that
    Electric charge on plates of capacitors (without dielectric ) is Q=CV
    And when dielectric is inserted in the space between plates of capacitors .charge Q remains the same whereas values of C and V change.
    i.e Q=C'V'
    is it correct?
  2. jcsd
  3. May 5, 2015 #2
    Do you know conservation of charges?
    You might have studied in electrostatics?
  4. May 5, 2015 #3


    User Avatar

    Staff: Mentor

    Yes, provided that the capacitor is isolated (i.e. not connected to a circuit) so no charge can enter or leave the plates.
  5. May 5, 2015 #4
    Thanks a lot for quick reply.
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