The maximum output power is delivered to a load resistance 'R', when the internal resistance 'r' of the source is equal to:
Correct answer: C. R
- A. oo
- B. 0
- C. R
- D. R/2
Explanation
The maximum output power is delivered to a load resistance ( R ) when the internal resistance ( r ) of the source is equal to the load resistance ( R ). This is known as the Maximum Power Transfer Theorem, which states that to obtain maximum external power from a power source with internal resistance, the resistance of the load must equal the resistance of the source as viewed from its output terminals. In mathematical terms, the condition for maximum power transfer is ( r = R ).
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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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