Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Parallel RC Circuit Problem

  1. Apr 7, 2005 #1
    Parallel RC Circuit Problem!!!!!!!!!!!!!

    Hey ive been working on this circuit for hours and cant figure out 1 value.
    This is exactly what was given to me on the page so i have no other information lol.

    All that was written was:

    find the values of Zt,It,I1,I2,Vc1

    Ive found all the other values which are

    Zt = 1.2 k angle -10.93
    It = 8.28 mA angle 10.93
    I1 = 8.13 mA angle 0
    I2 = 1.57 mA angle 90
    Vc1 i get 31.8 v angle -90 but the given answer is 5v and 0

    An explanation y it is that value would be appreciated


    ------------------------------------------
    l l l
    l l l
    l l l
    l 550 ohm resistor .01 microFarad Capacitor
    l l l
    l l l
    10V angle 0 l l
    l l l
    l 680 ohm resistor .01 microFarad Capacitor
    l l l
    l l l
    l frequency=5KHZ l l
    l l l
    l l l
    l----------------------l-------------------l
     
  2. jcsd
  3. Apr 8, 2005 #2
    dumwit atleast type what you are asking properly
     
  4. Apr 10, 2005 #3
    Well personally I would NOT call you dumbwit or any other name , but I am afraid he is correct in that I am not sure how anyone can understand your question
    Ray
     
  5. Apr 19, 2005 #4
    so where's the micky mouse cartoon i was promised1
     
  6. Jun 5, 2005 #5
    Hi DethRose,
    The capacitors are equal in size and form a simple voltage divider across the source. Regardless of the current through the capacitors, the voltage across each capacitor must logically be half of the source voltage ... 5v @ 0degrees.

    [tex]V_{C1}=V_s\frac{Z_{C1}}{Z_{C1}+Z_{C2}}
    =V_s\frac{j\omega C1}{j\omega C1+j\omega C2}
    =V_s\frac{C1}{C1+C2}=V_s\frac{C1}{2C1}=\frac{V_s}{2}[/tex]

    (it seems your other respondents have no imagination)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Parallel RC Circuit Problem
  1. RC Circuit Problem (Replies: 2)

  2. Parallel RC Circuit (Replies: 9)

Loading...