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Homework Help: Electrical networks(linear algebra)

  1. Jan 12, 2010 #1
    1. The problem statement, all variables and given/known data

    Determine the currents in the various branches.

    Then there is a picture of the network which has batteries, resistors, and nodes.

    Most of the problems have the currents labeled.

    My question is when the currents are not labled how do you determine where to put them and what direction to give them?
    2. Relevant equations
    No equations.

    3. The attempt at a solution

    By looking at the the various electrical networks in the book it looks like you can put the currents anywhere and in any diretion.
  2. jcsd
  3. Jan 12, 2010 #2


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    Science Advisor

    Without the picture, this question makes no sense at all! In any case, it looks like a physics problem to me. The whole point is to find the currents using such physics laws as the drop in voltage over a resistor and "conservation of charge".

    I'm going to move this to physics homework.
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