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In Thevenin's theorem, to find Z

Correct answer: D. all independent voltage sources are short circuited and all independent current sources are open circuited

  • A. all independent current sources are short circuited and independent voltage sources are open circuited
  • B. all independent voltage sources are open circuited and all independent current sources are short circuited
  • C. all independent voltage and current sources are short circuited
  • D. all independent voltage sources are short circuited and all independent current sources are open circuited

Explanation

When finding the equivalent impedance, an ideal independent voltage source is replaced by a short circuit and an ideal independent current source by an open circuit. Therefore option d gives the correct source deactivation rule.

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