The circuit is at steady state when the switch closes at time t = 0. Determine v1(0−), v1(0+), i2(0−), and i2(0+).

4) Consider the circuit shown in the Figure, where C₁ = 6.00 µF, C₂ = 3.00 μF, and AV=20.0 V. Capacitor C₁ is first charged by the closing of switch S₁. Switch S₁ is then opened, and the charged capacitor is connected to the uncharged capacitor by the closing of S₂. Calculate the final charge on C₂. A) 120 µC B) 80 µC C) 40 μC D) 60 μC E) 20 μC AI LI 5

3 Determine the equivalent impedance in the circuit shown in Figure P4.47: v,(1) = 636 cos (3,000t + ) v R2 = 22 k2 C = 6.8 nF 12. R = 3.3 k2 L = 1.90 H

Inductor DC response: Assuming ideal inductors, suppose R1 = 9Ω, R2 = 9Ω, R3 = 2Ω. Find the current i1 in ampere.