The switch in the circuit in (Figure 1) has been in position a for a long time. At t=0 it moves to position b. Take v1=66 V and v2=140V.
Part B
Select the formulas for vC(t) and i(t) for t>=0:
vC(t)=Vf-D1te^(-at)-D2e^(-at)
i(t)=I0te^(-at)
Part C
Determine the values of Vf, D1, and D2 in the expression vC(t)=Vf-D1te^(-at)-D2e^(-at) for t measured in seconds. Express your answers in volts to three significant figures and separated by commas:
Vf, D1, D2 = 140, 8.50 x 10^5, 85.0V
Part D
In the expression for the current i(t)=I0te^(-at)sin(ωt), determine the value of I0 when t is measured in seconds. Express your answer to three significant figures and include the appropriate units:
I0 = 610 H