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Voltages in supernode

  1. Jul 14, 2017 #1
    Hello Guys,
    I have a problem in understanding Nodal Analysis with Voltage Sources.It says that a supernode has no voltage of its own.But I can't understand why?
    Again,one more question,it says that there is no way of knowing the current through a voltage source in advance and that's why we have to use both KCL and KVL in case of a supernode.But what if the internal resistance of the voltage source is given?then we can know the current through it easily, or can't we?
    I'm so confused,please help..:confused:
  2. jcsd
  3. Jul 14, 2017 #2


    Staff: Mentor

    Ideal voltage sources have no internal resistance. If you are modeling a real life voltage source, use an ideal voltage source in series with an external resistance.
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