7–58 The switch in Figure P7–58 has been open for a long time and is closed at t = 0. The circuit parameters are L=1:25 H, C =0:05 μF, R1 =33 kΩ, R2 =33 kΩ, and VA =20V.

(a) Find vCðtÞ and iLðtÞ for t ≥ 0.

(b) Is the circuit overdamped, critically damped, or underdamped?

(c) Use Multisim to validate your results. Hint: In Grapher View plot vCðtÞ using the left axis and iLðtÞ on the right axis

Transcribed Image Text:

+ R t=0 R iL(t) + vc(t) FIGURE P7-58 -