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Homework Help: Find Voltage in the following circuit

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

    mcPKs.png

    2. Relevant equations

    nodal analysis, kvl, kcl, loop analysis?

    3. The attempt at a solution

    Can someone please tell me if my nodal equations look right?
    Did I redraw the circuit properly?
    Mainly I'm confused about how to treat that dependent current source at the top.

    esxY8.jpg
     
  2. jcsd
  3. Oct 1, 2011 #2

    gneill

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    Staff: Mentor

    The source at the top looks like a voltage source, not a current source.
     
  4. Oct 1, 2011 #3
    But the initial problem has a current running across the top, which led me to think that it's a current source. Are you sure it's a voltage source? If so, I have absolutely no idea how the nodal equations will work...
     
  5. Oct 1, 2011 #4

    gneill

    User Avatar

    Staff: Mentor

    I see the classic diamond shape of a controlled source and within it + and - designations for polarity. To me that says "voltage source". If it were a current source I'd expect to see an arrow inside. To be on the safe side check with your reference materials for your course, which will likely follow a common standard.

    This looks like a case where KVL loop equations will be a straightforward way to go. If your heart is set on nodal analysis, consider that a judicious choice of supernode will help :wink:
     
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