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Homework Help: Semicircular Dielectric

  1. Feb 19, 2009 #1
    1. The problem statement, all variables and given/known data

    We use two circular metal plates of radius 0.55 m and thickness 8.7 mm to build a capacitor. We leave a gap of 2.5 mm between the plates and fill half of the space between the plates with a medium with dielectric constant 16.3 and leave the other half filled with air. What is the capacitance of this capacitor in units of nF?

    2. Relevant equations

    C=((eplison zero)*(dielectric constant)*(area))/2

    3. The attempt at a solution

    I'm not sure how to start this problem. I was thinking, maybe divide the area in half, one with the dielectric and one without it, and treat it as two separate capacitors in a series, but can that be done?
    Last edited by a moderator: Apr 24, 2017
  2. jcsd
  3. Feb 19, 2009 #2


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    Sounds reasonable to me - but wouldn't it be two caps in PARALLEL?
  4. Feb 20, 2009 #3
    I'll try the parallel attempt first
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