7.5-2 Determine and sketch the inductor current i(t) for t> 0 in the circuit of Fig. P7.5-2. Answer: +2e-161/15 A. 5 A 4ΩΣ <20 iz(t) t = 0 5 H 4 Ω Figure P7.5-2

The switch in the circuit in Fig. P7.4 has been in posi- tion 1 for a long time. At t = 0, the switch moves instantaneously to position 2. Find vo(t) for t≥ 0+. Figure P7.4 13Ω 1 12 Ω 36 mH w www t=0 2 (+ 90 V 3022 60% 802 Ω

6. C = 1/2 F. Determine the type of damping exhibited by the circuit. 7.3.10 The parameters for a parallel RLC circuit are R = 122, L = 1/2 H, and

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Using the step-by-step method, find the value of the output current, io(t), just before the switch closes (at t=0-) for the network in Fig. P7.81. Given lç, 11 mA, R1 = 3 kQ, R2 = 6 kQ, R3 = 6 k0, and R4 = 7 KQ. 1 Is mA R1 ΚΩ Figure P7.81 R3 ΚΩ R2K t = 0 Los i,(1) 2 mH SR4K! Notes on entering solution: • Enter your solution in milliAmps(mA) • Enter your solution to the nearest tenth of a mA . Do not include units in your answer .ex. 5mA is entered as 5.0 2iA

7.2.16 Use the step-by-step method to find uo(t) for t> 0 in the circuit in Fig. P7.2.16. + v(t) 18V ( Μ 3 ΚΩ 6ΚΩ 200 με FIGURE P7.2.16 ww 3 ΚΩ t = 0 +1 σν

7.5-3 Determine and sketch the capacitor voltage vc(t) for t> 0 in the circuit of Fig. P7.5-3. Answer: 10-5e-t/6 V. t=0 + 5A A ΖΩΣ 3F vc(t) <252 Figure P7.5-3