The switch in the circuit in Fig. P7.21 is closed at t = 0 after being...

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The switch in the circuit in Fig. P7.21 is closed at t = 0 after being open for a long time. a. Find i₁(0) and i₂(07). b. Find ₁ (0+) and i2(0+). c. Explain why i1(0) = i₁(0+). d. Explain why i2(0¯) ‡ i₂(0+). e. Find i₁(t) for t≥ 0. f. Find i2(t) for t≥ 0+. Figure P7.21 100 μα 20 ΚΩ www 10 V 1=0 5 ΚΩ 1₂ 0.4 μF 10 ΚΩ {5 ΚΩ The switch in the circuit in Fig. P7.21 is closed at t = 0 after being open for a long time. a. Find i₁(0) and i₂(07). b. Find ₁ (0+) and i2(0+). c. Explain why i1(0) = i₁(0+). d. Explain why i2(0¯) ‡ i₂(0+). e. Find i₁(t) for t≥ 0. f. Find i2(t) for t≥ 0+. Figure P7.21 100 μα 20 ΚΩ www 10 V 1=0 5 ΚΩ 1₂ 0.4 μF 10 ΚΩ {5 ΚΩ