The following circuit is used to plot the power vs the load resistance curve. The PSPICE script is as follows. MPTT grapghV1 1 0 DC 10Rt 1 2 20Vx 2 3 DC 0RL 3 0 RMOD 1.MODEL RMOD RES(R=1).STEP RES RMOD(R) 1, 100, 1.DC V1 20 20 1.PRINT DC V(1,2) I(RL).probe.end The resultant plot as a function of RL is shown below. ...