Solved: The circuit model of a dc voltage source is shown in Fig. P3.47. The following
Chapter 3, Problem 3.47(choose chapter or problem)
The circuit model of a dc voltage source is shown in Fig. P3.47. The following voltage measurements are made at the terminals of the source: (1) With the terminals of the source open, the voltage is measured at 50 mV, and (2) with a \(15 \ \mathrm{M} \Omega\) resistor connected to the terminals, the voltage is measured at 48.75 mV. All measurements are made with a digital voltmeter that has a meter resistance of \(10 \ \mathrm{M} \Omega\).
a) What is the internal voltage of the source \(\left(v_{s}\right)\) in millivolts?
b) What is the internal resistance of the source \(\left(R_{s}\right)\) in kilo-ohms?
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