Question

In a circuit, the maximum power will be transferred only if the load resistance is equal to ...........

• A. Source resistance (RS)
• B. Thevenin's equivalent resistance (RT)
• C. Four times of the source resistance (4RS)
• D. Four times of the Thevenin's equivalent resistance (4RT)

Hint:

In Maximum Power Transfer Theorem, the power transferred to the load is maximized when the load resistance equals the Thevenin's equivalent resistance.

Answer 1

The Correct Option is B

Step 1: Apply Maximum Power Transfer Theorem.
The Maximum Power Transfer Theorem states that the maximum power is transferred to the load when the load resistance (\( R_L \)) is equal to the Thevenin’s equivalent resistance (\( R_T \)) seen from the load.

Step 2: Conclusion.
Therefore, for maximum power transfer, the load resistance must be equal to the Thevenin's equivalent resistance.

Final Answer: \[ \boxed{(2) \, \text{Thevenin's equivalent resistance } (R_T)} \]