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Homework Help: Kirchhoff's Rules?

  1. May 23, 2006 #1
    This is a problem from my physics book. We are learning Kirchhoff's rules with electric circuits and I'm at a loss at what to do here.

    I apply them just fine to a three loop circuit, using some algebra:
    |-/\/\-|\//\ -|
    | |
    | |

    Like so..where |\ is a battery and /\/\ indicate resistors. I can find the current in a similar circuit, voltage drops, etc

    But this problem:

    I don't know where to begin..or how to apply the rules. Can someone help me in finding the terminal voltage of the batteries??

    Last edited by a moderator: Apr 22, 2017
  2. jcsd
  3. May 23, 2006 #2
    You have to sum the drops across each circuit element. What is terminal voltage and how is it defined mathematically for an emf E with internal resistance r for which current i is flowing out of the positive terminal?
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