- #1

rms5643

- 20

- 0

## Homework Statement

Find Io in the network in the figure below using linearity and the assumption that Io = 1 mA.

Figure:http://i.imgur.com/Xtu0VmG.jpg

## Homework Equations

KCL, KVL, basic analysis techniques.

## The Attempt at a Solution

The following values I have calculated correctly:

VR1=9V

VR2=61V

VR3=70V

I1=1mA

I2=2mA

VR4=138V

VS=208v

I3=??

IS=??

IoActual=??

So, my trouble lies in finding I3, as once I find I3, I can easily find IS using KCL, though, the current source is doing something to the voltage drop across I3 that I'm not understanding.

How I tried to solve for I3 was the same way I solved for VS. Since the voltage drop across the source is 208v, then I assumed that the voltage drop across the two resistors on the left summed to 208v as well.

So, using Ohms Law: V/R=I, 208v/(42000Ω+26000Ω)=3mA, which is incorrect. Where did I go wrong?

Thank you