a$)$A small shunt resistor is used to sample the load current and convert it into a voltage for the op$-$amp. Theshunt resistor must be very small so that almostnoenergy intended for the load resistor is wasted inmeasuring. The op$-$amp uses that small voltage, amplifies it$,$ and sends it to the Arduino.Why do you think thecurrent measurement needs to be done using anop$-$amprather than how you measured the voltage in Part$1?($Think aboutthe reasons why op$-$amps areused$).$b$)$ Determinethemaximumcurrentacross yourloadresistor $($RL$).$The resistorsprovidedare $$ W resistors$$will your resistors exceed this power rating$($compare withthe currents from the solar panels in Part $1)?($Theshunt resistor is small enough that you can omit it from your calculation$).$c$)$Usingthehighestload currentfrom Partb, determine thevoltage into the $+$ terminalof theop$-$amp $($note:V$+=$ IloadRsh$).$The shunt resistor isverysmall because you don$$t want to draw extra current from the solar panelsupply to do the measurements. However, this means that theop$-$amp input voltage will also beverysmall.d$)$Theop$-$amp usedfor this design works rail$-$to$-$rail with a$5$V supply. This means that the range of theop$-$amp output voltage$($Vout$)$isabout$0$V to$5$V and anything outside of those values will be $$cut$-$off$.$For the op$-$ampfeedback resistor design, the CEO of Sparky Solar, Melanie Waters, has told youthat the op$-$ampcircuitneeds to function at temperatures as high as $155$C$,$ should be available soon for testing, and a lower pricepoint, if possible. The design criteriafor the op$-$amp circuit$($in order of importance$)$are:$1.$Higheroperating temp, $2.$Sooner availability, $3.$Lower cost