When the voltage sources are replaced with short circuits and current sources are replaced with open circuits, leaving dependent sources in the circuit, the theorem applied is
When the voltage sources are replaced with short circuits and current sources are replaced with open circuits, leaving dependent sources in the circuit, the theorem applied is Correct Answer Superposition
Superposition theorem states that the response in any element of a linear, bilateral network containing more than one independent voltage or current source is the algebraic sum of responses produced by the independent source when each of them is acting alone with:
- All other independent voltage sources short-circuited
- All other independent current sources open-circuited
- All the dependent voltage and current sources remaining as it is, i.e. they are neither SC nor OC
Note: If the internal resistance of the independent voltage or current sources is known then it is replaced by the internal resistance while short-circuiting or open circuiting.
Steps to solve circuits using superposition theorem:
- Select any one source and short circuit all the other voltage sources.
- Open all other current sources. If internal impedances are known, then replace them by internal impedances.
- Find out the current or voltage across the required element due to the source under consideration.
- Finally, add all the individual effects produced by individual sources to obtain the total effect net effect.
Important Point: Superposition Theorem is not applicable in evaluating the power as it has a non-linear relationship.
