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In (a) a resistor, R, was connected to the circuit. The registor voltage, v, was

ID: 1810856 • Letter: I

Question

In (a) a resistor, R, was connected to the circuit. The registor voltage, v, was measured. The resistance was changed, and the voltage was measured again. The results are shown in the table. In (b) The circuit has been replaced by its Thevenin equivalent circuit. Use the data in the table in (a) to determine the values of the Thevenin resistance, Rt, and the open circuit voltage, voc, in (b). Rt = ko and voc = v. Specify the value of R required to cause the resistor voltage to be v = 20.364 V. R = ko

Explanation / Answer

Voc*R/(R + Rth ) = V


=>R *Voc - V*Rth = VR


=>2Voc - 11.2Rth = 22.4 and 11Voc - 22Rth = 242


Voc = 28v anr Rth = 3 ohms

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