How to Calculate Voltage in a Circuit?

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The discussion focuses on calculating voltage in a circuit using Kirchhoff's Voltage Law and Ohm's Law. Participants share their calculations, with one user arriving at V1 = 18V and another at V1 = 37.3333V, highlighting discrepancies in their results. Clarification is sought regarding the role of an ammeter, with the consensus that it is assumed to be ideal with zero resistance. The conversation emphasizes the importance of understanding circuit components and their interactions for accurate voltage calculations. Overall, the thread illustrates the collaborative effort to solve circuit problems and verify calculations.
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Homework Statement



blFU9.png


Homework Equations



The Attempt at a Solution


I got V1=18V
Here's my work:
AdrND.jpg
 
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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?
 
HmSdE.png

Can you see that now?
 
Yup.
 
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?
 
I actually got a different answer just now too. I got V1 = 37.3333V
 
Yeah, that's what I get.
 
Would it be possible for you to check my answer to another problem as well?

0KxaB.png


Thank you!

I get 10.6666mA
 
Last edited:
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.
 
  • #10
Is is a current source.
 
  • #11
Oh, OK.
 

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