Question

[Lab 8] Can anyone tell me how I found the 'Component value for Device #1' in Circuit 2 and 3?

Answer 1

The answers are very dependent on the curves you have

Answer 2

The easiest way to determine what the 2 components is is to draw it in the sandbox or you can just use intuition since we know what R, L and C plot look like. (remember that at least one of the components must be a 1K ohm resistor,)

to find the correct value you have to determine if it is rising or falling then use the right equation:

C: Vf= Vi(1-e^-t/RC) or Vf= Vi(e^-t/RC)
L: Vf= Vi(1-e^-t*R/L) or Vf= Vi(e^-t*R/L)
Voltage divider:V*(R2/R1+R2)

And just solve with the value from the graph.
*Hint: for rise I used Vi=1

hope that helps. Good luck