The switch in the circuit shown in Figure 1 has been open for long time. At...

  

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The switch in the circuit shown in Figure 1 has been open for long time. At 1-0 the switch a) Find the initial value of the inductor current / at two opene [4 Marks] b) Find the final value of the inductor current / after the switch stays closed for a long time. [2 Marks] c) Calculate the inductor time constant 7 and write down the mathematical expression for i(t) fort 20. [3 Marks] Hint: it (t) = ILF + (ILO - ILF)e+ d) Derive the expressions for vi(t) and is(1) 40 Ω ww 120 V Š60 Ω 6Ω 1 = 0 250 mH + VL 20 is + 100 ΩΣ [3 Marks] Wis 60ΩΣ The switch in the circuit shown in Figure 1 has been open for long time. At 1-0 the switch a) Find the initial value of the inductor current / at two opene [4 Marks] b) Find the final value of the inductor current / after the switch stays closed for a long time. [2 Marks] c) Calculate the inductor time constant 7 and write down the mathematical expression for i(t) fort 20. [3 Marks] Hint: it (t) = ILF + (ILO - ILF)e+ d) Derive the expressions for vi(t) and is(1) 40 Ω ww 120 V Š60 Ω 6Ω 1 = 0 250 mH + VL 20 is + 100 ΩΣ [3 Marks] Wis 60ΩΣ