The switch in the circuit in (Figure 1) has been in position a for a long time. At t=0, the switch moves instantaneously to position b. Pt A. What is the initial value of va? Pt B. What is the initial...

The switch in the circuit in (Figure 1) has been in position a for a long time. At t=0, the switch moves instantaneously to position b.

Pt A. What is the initial value of va?

Pt B. What is the initial value of dva/dt?

Pt C. What is the numerical expression for va(t) for t≥0?

Extracted text: Figure P8.48 100 Ω 20 Ω 12 2 t = 0 300 V 2 mH 5 µF


Extracted text: -8000t O -600e cos(6000t) – 100e-8000t sin(6000t)V -8000t O -300e-8000t cos(6000t) – 100e sin(6000t)V -8000t -8000t O -300e cos(6000t) – 200e sin(6000t)V O -300e-8000t cos(6000t) + 200e-8000£ sin(6000t)V -8000t -8000t O -600e cos(6000t) + 200e sin(6000t)V -8000t O -300e cos(6000t) + 100e-8000t sin(6000t)V O -600e -8000t cos(6000t) – 200e -8000t sin(6000t)V -8000t O -600e cos(6000t) + 100e-8000t sin(6000t)V