7–62 The switch in Figure P7–62 has been in position A for a long time and is moved to position B at t = 0. The circuit parameters are R1 =1 kΩ, R2 = 100 Ω, L= 250 mH, C= 3:3 μF, and VA =24V.

(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 A w R C t=01 ww iL(t) B +vc(f)- VA FIGURE P7-62