A circuit comprises an inductor of 700mH of negligible resistance connected in series with a 15Ω resistor and a 24V d.c. source. Calculate: a) i) the initial rate of change of current ii)the time constant (T) for the circuit b) the value of the current after 1T seconds, and ii) the time to develop maximum current. The attempt at a solution The inductor has negligible resistance so we can use V=IR to calculate the current through the circuit = 24/15 = 1.6A V-iR/L = 24-(1.6x15)/(700x10-3)=0 So, I got zero. So, I got nothing, right? What am I doing wrong? I suck at this!