7–63 The switch in Figure P7–62 has been in position B for a long time and is moved to positionAat 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.