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Homework Help: Voltage/current circuts

  1. Nov 19, 2011 #1
    1. The problem statement, all variables and given/known data
    I have "network N" that includes (resistorse, voltage and current sources), and we do 2 experiments:
    1. connecting idial current source, and measuring 3V
    2. connecting idial voltage source, and measuring 5A.

    need to find V(I)=?

    3. The attempt at a solution
    Nothing much....

    Can someone give me a hint, please?


    Attached Files:

    Last edited: Nov 19, 2011
  2. jcsd
  3. Nov 19, 2011 #2

    Simon Bridge

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    You are expected to use the Thevenin and Norton equivalent circuits perhaps?

    What is V(I) supposed to represent?
  4. Nov 19, 2011 #3
    Yes, i am expected to use them...
    V(I) for points a,b.
  5. Nov 19, 2011 #4

    Simon Bridge

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    Well... ? Have you found the Thevenin and/or Norton equivalents for the black box?

    I figured that you'd want to measure Vba but you presumably want the curve or equation for the Vba as a function of current. But what current? The current in the circuit OK but which circuit? Can you tell me in words what V(I) represents?

    I'm not asking these questions for information: those are hints.
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