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Maximum power in terms of the thevenin’s voltage and load resistance __________(a) (VTh) 2 /4RL(b) (VTh) 2 *4RL(c) (VTh) 2 +4RL(d) 4RL/ (VTh) 2The question was asked in exam.This is a very interesting question from Maximum Power Transfer and Superposition in section Techniques of Circuit Analysis of Electric Circuits

Answer»

Right choice is (a) (VTH) 2 /4RL

For explanation: PMAX= V*i= i*R*i= i2RL = (VTh/(RTh+RL))2*RL.Max power occurs when RL=RTh.



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