(Solved): 9) (12 pts) You have been asked to design a voltage divider circuit to provide an open-circuit out ...

9) (12 pts) You have been asked to design a voltage divider circuit to provide an open-circuit output voltage of \( V_{\text {oUT }}=+5 \mathrm{~V} \) from an input \( +9 \mathrm{~V} \) source, as shown at right. The total current drawn from the \( +9 \mathrm{~V} \) source is to be 20 conditions (no load connected at \( V_{\text {OUT }} \) ). a) Calculate the required values for \( R_{1} \) and \( R_{2} \) b) Using your design from part a, attach a load resistor of \( 500 \Omega \) across the output terminals at \( V_{\text {our }} \). What is the value of \( V_{\text {OUT }} \) with the load resistor installed? c) With the load resistance of \( 500 \Omega \) connected at the output, what is the efficiency of this circuit? That is, the power dissipated by the \( 500 \Omega \) resistor as a fraction of the total power provided by the \( +9 \mathrm{~V} \) source.