(a) In the circuit of let R1 5 200 V, R2 5 300 V, R3 5 100 V, and iS 5 30 mA. If vS is swept from 0 to 10 V, sketch and label, as a function of vS, the current i supplied by vS and the voltage v...

(a) In the circuit of let R1 5 200 V, R2 5 300 V, R3 5 100 V, and iS 5 30 mA. If vS is swept from 0 to 10 V, sketch and label, as a function of vS, the current i supplied by vS and the voltage v across iS. Show all breakpoints and slopes. (b) If vS 5 5 V and iS is swept from 0 to 60 mA, sketch and label, versus iS, the current i supplied by vS and the voltage v across iS.