How to Calculate Voltage in a Circuit?

[naivy]

Homework Statement

Homework Equations

The Attempt at a Solution

I got V₁=18V
Here's my work:

 

[omoplata]

Can't see the image statement. Imgur.com says image does not exist.

Can see your work though. Is that line connecting + and - a conductor?

 

[naivy]

Can you see that now?

 

[omoplata]

Yup.

 

[omoplata]

I applied Kirchhoff's Voltage law and V=IR to solve this. The final answer I got is different from yours.

How did you get those first two lines on the left?

 

[naivy]

I actually got a different answer just now too. I got V₁ = 37.3333V

 

[omoplata]

Yeah, that's what I get.

 

[naivy]

Would it be possible for you to check my answer to another problem as well?

Thank you!

I get 10.6666mA

 

[omoplata]

Need to clear one thing up before I try.

I_s is an ammeter, right?

Ideal ammeters have zero resistance. Since a resistance value is not given for I_s, it has to be assumed to be an ideal ammeter. Then the current is going to bypass the 8k and 4k resistors.

 

[naivy]

I_s is a current source.

 

[omoplata]

Oh, OK.