Basic Circuit Theory Chpter5 Problems 6 The switch in the circuit of Fig 5-32 is a single-pole, double-throw switch that is drawn to indicate that it closes one circuit before opening the other. Assuming the switch has been in the position drawn in the figure for a long time, determine the value of v and il(a) the instant just prior to the switch changing; ( b)the instant just after the switch changes 5A 8921129 3H Fig. 5-32 For prob. 6 7 The switch in Fig. 5-33 opens at t=0 after having been closed for time immemorial. Find i2(0-),i2(0-),andi(0+),i2(0+) L30150230m Fig. 5-33 For prob. 7. 8 After being open for two days, the switch in Fig. 5-34 closes at t=0, sketch v(t) versus t and evaluation v at t=15s 1.2g 4.2H Fig. 5-34 For prob.8. 9 The switch in series with the battery in Fig. 5-35, having been closeed for a long time, is opened at t=0. Over what time interval is the voltage magnitude across the switch greater than lv? Ω2 Fig 5-35 For prob. 9 10 The switch in the circuit shown in Fig. 5-36 is opened at t=0 after being closed for a long time find v for t>o 3 mA 0.9V [2k2 Fig. 5-36 For prob. 10 Dalian maritime universityBasic Circuit Theory Chpter5 Problems 6 The switch in the circuit of Fig.5-32 is a single-pole, double-throw switch that is drawn to indicate that it closes one circuit before opening the other. Assuming the switch has been in the position drawn in the figure for a long time, determine the value of v and i (a) the instant just prior to the switch changing; (b) the instant just after the switch changes. L 5A 3H 2Ω 8Ω L i 12 Ω v + - t = 0 Fig. 5-32 For prob.6. 7 The switch in Fig.5-33 opens at t = 0 after having been closed for time immemorial. Find i (0 ), i (0 ), and i (0 ), i (0 ). L − x − L + x + t=0 x i 100Ω L i 300Ω 150Ω 50 mH 60 mA Fig. 5-33 For prob.7. 8 After being open for two days, the switch in Fig.5-34 closes at t = 0, sketch v(t) versus t and evaluation v at t = 15s. + t=0 - 6 V 1 .2Ω v (t ) 0 .3Ω 4.2H 0 .7 Ω Fig. 5-34 For prob.8. 9 The switch in series with the battery in Fig.5-35, having been closeed for a long time, is opened at t = 0. Over what time interval is the voltage magnitude across the switch greater than 1V? 10 The switch in the circuit shown in Fig.5-36 is opened at t = 0 after being closed for a long time, Find v for t > 0. x t=0 Fig. 5-35 For prob.9. 100 Ω 12 V 400µF 200µF 100 Ω + - t=0 + - 1 kΩ 3 mA 0 .9 V 2.5µF v x 2 kΩ DaLian Maritim Fig. 5-36 For prob.10. e University 2