일반물리학 2 — Induction and Inductance: Problem 35

35 In Fig. 30-36, after switch S is closed at time \( t = 0 \), the emf of the source is automatically adjusted to maintain a constant current \( i \) through S. (a) Find the current through the inductor as a function of time. (b) At what time is the current through the resistor equal to twice the current through the inductor?