Which of the following network theorem deals with finding out the circuit values of voltage and current in a restricted portion of the network by replacing the actual source of energy by a single "equivalent voltage source" or by a single "equivalent current source" acting at a terminal pair?
- A. Compensation Theorem
- B. Norton's Theorem
- C. Substitute Theorem
- D. Thevenin's Theorem
Answer: D. Thevenin's Theorem
Explanation: Replacing a network portion by a single equivalent voltage source (with series impedance) is Thevenin's theorem (its dual, Norton's, uses a current source).