yes, i apply a ac source , 12v,100khz, 0v offset, to an pure inductor with inductance 500uH, transient start from 0-50ms, step 1us. start the simulation run and suprising find that the inductor current always shift above the 0 level. when i place resistor in series with it, the ac current will shift above the 0 and fall down slow to 0 level at the stead state
for the L/R explination, i still not understand. even it is, the ac current should swing between negative to positive across the 0 level and with larger envolpe at initial, smaller at steady state instead of always over the 0 level