(Solved): 14. The circuit model of a dc voltage source is shown in Fig. \( 12 . \) The following voltage meas ...

14. The circuit model of a dc voltage source is shown in Fig. \( 12 . \) 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 \( 50 \mathrm{mV} \), and (2) with a \( 15 \mathrm{M} \Omega \) resistor connected to the terminals, the voltage is measured at \( 48.75 \mathrm{mV} \). All measurements are made with a digital voltmeter that has a meter resistance of \( 10 \mathrm{M} \Omega \). 1. a) What is the internal voltage of the source (vs) in millivolts? 2. b) What is the internal resistance of the source (Rs) in kiloohms? Fig. 12