Question

18. Setting R = 1 k? and L = 1 nH for the circuit represented in Fig. 8.11, and with the knowledge that i(0) = -3 mA, (a) write an expression for i(t) valid for all t ? 0; (b) compute i(t) at t = 0, t = 1 ps, 2 ps, and 5 ps; and (c) calculate the energy stored in the inductor at t = 0, t = 1 ps, and t = 5 ps. i(t) + v_R R L + v_L - FIGURE 8.11 A series RL circuit for which i(t) is to be determined, subject to the initial condition that i(0) = I0. 19. If i(0) = 1 A and R = 100 ? for the circuit of Fig. 8.11, (a) select L such that i(50 ms) = 368 mA; (b) compute the energy stored in the inductor at t = 0, 50 ms, 100 ms, and 150 ms.

          18. Setting R = 1 k? and L = 1 nH for the circuit represented in Fig. 8.11, and with the knowledge that i(0) = -3 mA, (a) write an expression for i(t) valid for all t ? 0; (b) compute i(t) at t = 0, t = 1 ps, 2 ps, and 5 ps; and (c) calculate the energy stored in the inductor at t = 0, t = 1 ps, and t = 5 ps.
i(t)
+ v_R R L + v_L -
FIGURE 8.11 A series RL circuit for which i(t) is to be determined, subject to the initial condition that i(0) = I0.
19. If i(0) = 1 A and R = 100 ? for the circuit of Fig. 8.11, (a) select L such that i(50 ms) = 368 mA; (b) compute the energy stored in the inductor at t = 0, 50 ms, 100 ms, and 150 ms.

18. Setting R = 1 k? and L = 1 nH for the circuit represented in Fig. 8.11, and with the knowledge that i(0) = -3 mA, (a) write an expression for i(t) valid for all t ? 0; (b) compute i(t) at t = 0, t = 1 ps, 2 ps, and 5 ps; and (c) calculate the energy stored in the inductor at t = 0, t = 1 ps, and t = 5 ps.
i(t)
+ vR R L + vL -
FIGURE 8.11 A series RL circuit for which i(t) is to be determined, subject to the initial condition that i(0) = I0.
19. If i(0) = 1 A and R = 100 ? for the circuit of Fig. 8.11, (a) select L such that i(50 ms) = 368 mA; (b) compute the energy stored in the inductor at t = 0, 50 ms, 100 ms, and 150 ms.

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