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Homework Help: Circuit Analysis

  1. Feb 4, 2009 #1


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    I have the following circuit:

    My question is, what do I take the voltage direction to be? For the center component, it is 200V in a positive direction being upwards so does that mean that for the other components (20A and 10A), it is also in that direction?

    Thanks in advance. :smile:

    EDIT: I have one more question - When voltage is in the direction of current, is the power equal to +Vi or -Vi? :confused:
    Last edited: Feb 4, 2009
  2. jcsd
  3. Feb 4, 2009 #2


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    I don't understand the components - are they batteries, meters or what? Hmm, can't be meters because you can't run 80 A through a Voltmeter or put 200 Volts across an Ammeter!

    It appears that the + and - markings indicate the voltage polarity and the arrows indicate the direction of standard (positive) current.
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