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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 “equivalent current source” acting at a terminal pair?

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 “equivalent current source” acting at a terminal pair? Correct Answer Substitute Theorem

Substitution Theorem states that any branch of a DC bilateral circuit can be substituted by a combination of various circuit elements, provided the current & voltage across the branch remains unchanged. Basically, this theorem tells us the boundary condition to replace a circuit branch.

If the value of current and voltage across a branch of circuit network is known, then we can replace that branch by other circuit element like current source, voltage source etc. in such a way that the current & voltage across that branch remain the same. This replacement is called the branch equivalent.

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