1. Not finding help here? Sign up for a free 30min 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!

Tricky circuit calculating the total capacitance

  1. Apr 4, 2014 #1
    1. The problem statement, all variables and given/known data
    Calculate the equivalent capacitance between points a and b in the figure below (C1 = 4.10 μC and C2 = 1.60 μC). Notice that this system is not a simple series or parallel combination.

    cw27A8Q.gif

    2. Relevant equations
    Series:
    CT = [1/c1 + 1/c2...]-1

    Parallel:
    CT = C1 + C2...

    3. The attempt at a solution
    I don't know where to tackle this problem...
     
  2. jcsd
  3. Apr 4, 2014 #2

    SammyS

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    As the problem states, this is not a combination of series and parallel pieces..

    Use symmetry.
     
  4. Apr 5, 2014 #3
    Symmetry...? Not sure how to do that...
     
  5. Apr 5, 2014 #4

    rude man

    User Avatar
    Homework Helper
    Gold Member

    OK, hint: take out the 8 uF capacitor, apply any voltage to a and b, what is the voltage between the two C1's and what is the voltage between the two C2's?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Tricky circuit calculating the total capacitance
Loading...