3–105 Maximum Power Transfer Using Multisim Figure P3−105 shows a circuit with two sources, a fixed load and a resistor R. Select R for maximum power transfer to the load.

The result is not an obvious one. (Hint: Simulate in Multisim using the “Parameter sweep” under “Analyses” and do a linear sweep for R from 1 Ω to 10MΩ. Plot the power transferred to the load PðRLÞ versus the variable R. What is the maximum power transferred?)

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R www 20 10 V +1 www 5 mA FIGURE P3-105 4