The switch in Figure has been open for a long time and is closed at t = 0. The circuit parameters are L = 1.25 II, C = 0.05 µ F, R¡ = 20 k 2,R2 = 20 k 2, and V4 = 20 V. R1 İL() t = 0 VA R2 L C Figure 4: Question 8 (a) Find vc(t) and ir(t) for t >0. (b) Is the circuit over-damped, critically damped, or underdamped?

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The switch in Figure has been open for a long time and is closed at t = 0. The circuit
parameters are L = 1.25 II, C = 0.05 µ F, R1 = 20 k 2,R2 = 20 k 12, and VA = 20 V.
R1
t = 0
VA
R2:
Figure 4: Question 8
(a) Find vc(t) and ir(t) for t 20.
(b) Is the circuit over-damped, critically damped, or underdamped?
Transcribed Image Text:The switch in Figure has been open for a long time and is closed at t = 0. The circuit parameters are L = 1.25 II, C = 0.05 µ F, R1 = 20 k 2,R2 = 20 k 12, and VA = 20 V. R1 t = 0 VA R2: Figure 4: Question 8 (a) Find vc(t) and ir(t) for t 20. (b) Is the circuit over-damped, critically damped, or underdamped?
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