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Homework Help: The Potential Difference between 2 points

  1. Aug 6, 2012 #1
    1. The problem statement, all variables and given/known data
    What is the potential difference between points a and b in the diagram?

    2. Relevant equations

    3. The attempt at a solution
    I have calculated the currents to be:
    What I tried doing was (0.30*5) - 0.35= 1.15 V but it's not right. Any help?
  2. jcsd
  3. Aug 6, 2012 #2
    What is the value of V1?
    http://img820.imageshack.us/img820/5158/cctb.jpg [Broken]
    Last edited by a moderator: May 6, 2017
  4. Aug 6, 2012 #3
    Sorry, it's 12.0 V
  5. Aug 7, 2012 #4


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    Staff: Mentor

    How did you arrive at that last expression? What does it represent?
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