1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: How to solve for the capacitance of an interlocking plates

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

    A capacitor is constructed of interlocking
    plates as shown in the figure (a cross-sectional
    view). The separation between adjacent
    plates is 1.26 mm, and the effective area of
    one of the adjacent plates is 6.1 cm2.

    http://images.upload2world.com/get-6-2009-upload2world_com_jdqtdnhw.jpg [Broken]

    The permittivity of a vacuum is 8.85419 × 10−12 C2/N · m2.
    Ignoring side effects, calculate the capaci-
    tance of this unit. Answer in units of pF.

    2. Relevant equations


    3. The attempt at a solution

    what i did is that i assumed that the capacitors are parrallel therefore i used this equation by plugging the given values .. but still i keep getting the wrong answer ..

    i am looking forward for your help
    thanx in advance
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Jun 19, 2009 #2


    User Avatar
    Gold Member

    hey mba444, welcome to PF :)
    how many capacitors you assumed that are parrallel?
  4. Jun 19, 2009 #3
    thanx for welcoming

  5. Jun 19, 2009 #4


    User Avatar
    Gold Member

    :bugeye:sure not:tongue:, you know that each capacitor have two plates separated by the vacuum now look again at the pic, got it?!...
  6. Jun 19, 2009 #5

    thereore 8

    thanx alot :shy:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook