How to Calculate Voltage in a Circuit?

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Homework Help Overview

The discussion revolves around calculating voltage in a circuit, specifically using Kirchhoff's Voltage Law and Ohm's Law. Participants are examining their individual calculations and interpretations of the circuit setup.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants are sharing their calculated voltages and questioning the methods used to arrive at those values. There is a focus on the interpretation of circuit elements, such as the role of a conductor and the characteristics of an ammeter.

Discussion Status

Multiple participants have provided different voltage results, indicating a lack of consensus on the correct answer. Some have offered insights into their reasoning, while others are seeking clarification on circuit components and assumptions.

Contextual Notes

There are references to missing information, such as an image that could not be viewed, and assumptions regarding the ideal characteristics of an ammeter. The discussion includes uncertainty about the setup and values used in calculations.

naivy
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Homework Statement



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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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