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Voltage and current source in superposition theorem

  1. Mar 16, 2012 #1
    why we take current source as a open and voltage source as a short in superposition theorem. is this is because of its internal resistance or any other reason exist?
     
  2. jcsd
  3. Mar 16, 2012 #2

    rbj

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    An ideal voltage source is something that will deliver that specified voltage no matter how much current is required. If you set that voltage spec to 0 (which you do to remove that voltage from the linear equation that depends on it) it is the same as a short circuit. A wire.

    An ideal current source is something that will deliver that specified current no matter how much voltage is required. If you set that current spec to 0 (which you do to remove that current from the linear equation that depends on it) it is the same as an open circuit. An insulator.
     
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