ANS. Thevenin’s Theorem- states that any complicated network across its load terminals can be substituted by a voltage source with one resistance in series. This theorem helps in the study of the variation of current in a particular branch when the resistance of the branch is varied while the remaining network remains the same.
Steps for Solving Thevenin’s Theorem
Step 1 – First of all remove the load resistance r L of the given circuit.
Step 2 – Replace all the sources by their internal resistance.
Step 3 – If sources are ideal then short circuit the voltage source and open circuit the current source.
Step 4 – Now find the equivalent resistance at the load terminals, known as Thevenin’s Resistance (RTH).
Step 5 – Draw the Thevenin’s equivalent circuit by connecting the load resistance and after that determine the desired response