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Homework Help: Using Kirchoff's junction rule for current from a battery.

  1. Aug 17, 2011 #1
    1. The problem statement, all variables and given/known data

    Use Kirchhoff's junction rule to calculate the current supplied by the battery.

    2. Relevant equations

    attached a pic.

    3. The attempt at a solution

    Where do we start?

    Attached Files:

  2. jcsd
  3. Aug 17, 2011 #2


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    Staff Emeritus
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    How much does the voltage drop across each of the 2Ω & 5Ω resistors?
  4. Aug 18, 2011 #3
    Okay, so using series formula, 27V/(2ohms+5ohms) = 3.8V?
  5. Aug 18, 2011 #4


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    Staff: Mentor

    First off, what does "Kirchhoff's Junction Rule" state?
  6. Aug 18, 2011 #5


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    What gneill says !!
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