3. Referring to the circuit shown in Fig. 8.1, select values for both elements such that L/R = 1 and (a) calculate vR (1) at t = 0, 1, 2, 3, 4, and 5 s; (b) compute the power dissipated in the resistor at t=0, 1 s, and 5 s. (c) Att=5 s, what is the percentage of the initial energy still stored in the inductor? + VR w i(t) + L VL R FIGURE 8.1 A series RL circuit for which i(t) is to be determined, subject to the initial condition that i(0) = lo.