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Voltage Division with Multiple Voltage Sources Seperated by Resistors

  1. Feb 2, 2013 #1
    1. The problem statement, all variables and given/known data
    Find the voltage across the 10 ohm resistor.
    http://www.spacemonkeybrewing.com/images/circuit.jpg [Broken]

    2. Relevant equations

    KVL - Sum of Voltages in a closed loop equal zero.
    Ohms - V=IR
    Voltage Divide - Va1 = (R1/(R1+R2...))Vs

    3. The attempt at a solution

    This is only the second week into the introduction of electrical circuits and I'm not sure where to start here. It doesn't look like I can use KVL, Ohms law or the voltage division equation to solve this problem. I would know how to solve it if it only had a single voltage source or voltage sources that aren't divided by resistors. Any assistance would be greatly appreciated.
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Feb 2, 2013 #2

    NascentOxygen

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    Staff: Mentor

    Hi TheCarl, http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

    You can replace the 3 voltage sources by 1. Try that and see how you go. :smile:
     
    Last edited by a moderator: May 6, 2017
  4. Feb 3, 2013 #3
    So are you saying that basically the circuit above would be equivilant to this:
    http://www.spacemonkeybrewing.com/images/circuit2.jpg [Broken]

    And therefore V = (10Ω/(15Ω+10Ω+20Ω+5Ω))6V = 6/5V ?


    P.S. Thanks for the quick reply.
     
    Last edited by a moderator: May 6, 2017
  5. Feb 3, 2013 #4

    NascentOxygen

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    Staff: Mentor

    That's the idea.
     
  6. Feb 3, 2013 #5
    Thank you so much!
     
  7. Feb 3, 2013 #6

    NascentOxygen

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    Staff: Mentor

    For future reference: your pic archive site seems slow or unreliable, and the pic is some of the time failing to appear. I venture that some people will be reading this and wondering where's the circuit we are discussing? For next time, I suggest that you try out another site, or else attach your pic to your post.
     
  8. Feb 4, 2013 #7
    Here are the two photos in order in case they don't show up in the above threads.
     

    Attached Files:

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