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    Question

    Maximum Power transfer occurs when

    the_____
    A Load voltage and current are two-third of their maximum values. Correct Answer Incorrect Answer
    B Load voltage and current are equal. Correct Answer Incorrect Answer
    C Load voltage and current are one-half of their maximum values. Correct Answer Incorrect Answer
    D Load voltage and current are one-third of their maximum values. Correct Answer Incorrect Answer

    Solution

    Maximum power transfer theorem states that a source delivers maximum power to the load when the load resistance is equal to the internal resistance (Thevenin resistance) of the source. In this case, the voltage across the load becomes half of the open-circuit voltage, and the current through the load becomes half of the short-circuit current. Hence, both load voltage and load current are one-half of their maximum values, and their product (power) is maximum.

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