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Insert Dielectric

  1. Sep 23, 2007 #1
    1. The problem statement, all variables and given/known data
    Two identical capacitors and of capacitance 1.20 F are connected in series across a FIXED total potential of 650 V. A dielectric slab of dielectric constant 3.70 can fill and is slowly inserted into that capacitor.
    1. What is the change in charge, , on when the dielectric is added to ?
    2. What is the change in charge, , on when the dielectric is added to ?

    2. Relevant equations
    [tex]C=C_{o}K[/tex]

    3. The attempt at a solution
    Not quite sure.
     
  2. jcsd
  3. Sep 23, 2007 #2

    learningphysics

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    Use Q = CV. which capacitor is the dielectric inserted into?
     
  4. Sep 23, 2007 #3
    the first one
     
  5. Sep 24, 2007 #4

    learningphysics

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    What is the equivalent capacitance of the two series capacitors? Use the Q=CV relationship to get the charge on the equivalent capacitor...

    The charge on each capacitor is the same as the charge you get above...
     
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