Basic Circuit Theory Chpter5 Problems 1 The switch in Fig. 5-27 is opened at t=0, Find iz(0)and vL(0) IkQ 100V lkQ vE35mH Fig. 5-27 For prob. 1 2 The switch is closed at t=0 in Fig. 5-28. Find i(0*)and ic(0*) if the capacitor is initially uncharged l Oko 5g2 Fig 5-28 For prob. 2 3(a)The switch in Fig. 5-29 is closed at t=0. If the initial capacitor voltage and inductor current are both zero, find vr(o )and iR(0).(b) Suppose the switch in Fig. 5-29 has been losed for a long time when it is opened at t=0. Find V r(o )and iR(0) I kQ2 i 10uF 10mH Fig. 5-29 For prob. 3 4 For the circuit shown in Fig. 5-30, find i,(0),12(0), and v(0) 0.492 2H 24V Fig 5-30 For prob. 4 5 After being in the configuration shown for a long time, the switch in Fig.5-31 is opened at t 0. Determine values for is(0),i,(0 ),is(0), and.(0 100g 7592 0.8i D4V‖20g2 DaLian Maritime UniversityBasic Circuit Theory Chpter5 Problems 1 The switch in Fig.5-27 is opened at t = 0, Find i (0 ) and v (0 ) L + L + + - - t=0 + Li 100V 1kΩ 1kΩ L v 5mH Fig. 5-27 For prob.1. 2 The switch is closed at t = 0 in Fig.5-28. Find i(0 ) and i (0 ) if the capacitor is initially uncharged. + C + + - t=0 + - 5 Ω C v 10 V 2 F i ( )t 1 0 kΩ C i Fig. 5-28 For prob.2. 3 (a) The switch in Fig.5-29 is closed at t = 0. If the initial capacitor voltage and inductor current are both zero, find v (0 ) and i (0 ). (b) Suppose the switch in Fig.5-29 has been closed for a long time when it is opened at t = 0. Find v (0 ) and i (0 ). R + R + R + R + + - t=0 + - 1 kΩ 100V 10µF 10mH R v Ri Fig. 5-29 For prob.3. 4 For the circuit shown in Fig.5-30, find i 1 (0 ), i (0 ), and v(0 + ). + 2 + + t =0 - 2 Ω 8Ω 24 V v (t ) 1 H 0 .4Ω 2 H 1i 2 i Fig. 5-30 For prob.4. 5 After being in the configuration shown for a long time, the switch in Fig.5-31 is opened at t = 0. Determine values for i (0 ), i (0 ), i (0 ), and i (0 ). S − x − S + x + + - t=0 x i 34 V 20Ω 100Ω 75Ω 25Ω 10 mF s i x 0 . 8 i Fig. 5-31 For prob.5. DaLian Maritime University 1