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Homework Help: Calculate voltage drop for a circuit

  1. Feb 26, 2010 #1
    1. The problem statement, all variables and given/known data

    wKXQh.png

    2. Relevant equations

    V=IR (Ohm's Law)

    3. The attempt at a solution

    Now I'm able to get V=0 for when R=0 but I'm not sure as to how to solve for I when R=0. Can I ignore the 10 Ohm resistor as it's a short circuit as R=0.
     
  2. jcsd
  3. Feb 26, 2010 #2

    vela

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    No, you would only be able to ignore the 10-ohm resistor if it were in parallel with the short circuit.

    What you want to do is apply Kirchoff's current law to the node a or b. To do that, though, you'll first want to find the voltage drops in the circuit.
     
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