: Suppose you’re trying to measure an unknown sensor resistance, ????????????????????o???? , by converting it to a voltage. For a fixed set of values of ????1 ,????1 ,???????????? and ????????????, each of the following circuits will yield an output voltage, ????o , as function of ????????????????????o???? . a. [10 points] For each of these circuits, write the equations relating ????o to ????????????????????o???? . b. [10 points] Find the sensitivity for each of these circuits (note that the sensitivities for some of these circuits may not be constants).