I'm using version 9.2 for Orcad but I doubt it makes a huge difference for newer versions. The problem is attached. I am able to draw the schematic on pspice. I create an AC Sweep simulation with starting frequency: .01 ending frequency:1,000,000 Logarithmic Decade:100. I run the simulation and I can do part(a) easily because the resistor is connected to ground. I add trace DB(V(R1:1)). Plot a new y-axis and then add trace VP(V(R1:1)). My problem is, I don't know what the expression is for part(b) and part(c). Is VDB across the inductor, DB(V(L1:1) -V(L1:2)) or is it [DB(V(1:1)) - DB(V(L1:2))] or am I doing everything wrong?