Accoreling to maximum power transfer theorem, which of the following is the max power delivered by the battery to the output?
Correct answer: A. E2/4r
- A. E2/4r
- B. E2/2r
- C. E2/5r
- D. E2/3r
Explanation
The Maximum Power Transfer Theorem in electrical circuits states that to transfer the maximum amount of power from a source (like a battery) to a load (like a resistor), the resistance of the load should be equal to the internal resistance of the source. Here, "E" represents the electromotive force (EMF) of the battery, and "r" represents the internal resistance of the battery. The correct statement is B. E^2/4r. According to the Maximum Power Transfer Theorem, the maximum power is delivered to the load when the load resistance is equal to the internal resistance of the source (battery).
This question appeared on the UHS MDCAT 2023 paper, which you can sit online with every answer explained.
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About Maximum Power Output
Maximum power output describes the condition in which a source with internal resistance delivers the greatest power to an external load. The topic uses P = I²R and related circuit equations to show that maximum power occurs when load resistance equals internal resistance. This differs from maximum efficiency, which occurs under a separate condition.
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