6.1 The RL Circuit: Example 6-1 cont.
The differential equation is Ldi(t)/dt + Ri(t) = vS(t) which can be written in prototypical form as: di(t)/dt + (R/L)i(t) = (1/L)vS(t)
R = 1.2 W and L = 5 H so the time constant is: T = L/R » 4.167 seconds
The generic-form solution is then ...