1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

RC Circuit

  1. Feb 1, 2010 #1
    1. The problem statement, all variables and given/known data

    I'm having a problem with the circuit in the attached diagram. I am looking for the charge on the plates of the capacitor a long time after the switch is closed.

    2. Relevant equations

    3. The attempt at a solution

    I found the current leaving the battery is 0.962 A a long time after the switch is closed. The solution says to multiply this by 27 ohms to find the voltage across the capacitor from which the charge can be calculated. I don't understand how this is possible since the diamond shaped segment is a complex circuit.

    Attached Files:

  2. jcsd
  3. Feb 1, 2010 #2
    A long time after the switch is closed, we have a steady state regime, that is the capacitors are charged up so no current flows through them. You can simply eliminate them from the circuit(mentally) and then calculate the current and the voltage drops between their plates.

    Hope this helps.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook