The current, Potential Difference, in a 3-cell circuit

AI Thread Summary
The discussion revolves around solving a three-cell circuit using Kirchhoff's Voltage Law, where the user struggles with current calculations, specifically finding that I1 equals negative I2. There is uncertainty about how to approach the problem, especially in determining the contributions of each cell to the overall current. The importance of understanding series and parallel configurations in the circuit is emphasized, along with the fundamental equation V=IR. The user seeks clarity on whether to include the cell in calculations and how to proceed with subsequent parts of the problem. Overall, the thread highlights common challenges faced when learning to analyze multi-cell circuits.
YarnJunior
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Homework Statement


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Homework Equations

The Attempt at a Solution


I've never dealt with a three-cell circuit before. For calculating the current, I tried doing Kirschoff's Voltage Law, all I kept getting was that I1 = negative I2. I tried taking the current as coming out of the 2 voltage cell, but now I'm starting to doubt myself. However, taking it from the other cells doesn't seem to do anything else. I'm not quite sure how to solve b, or c without a. Any help? Thanks!
 

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WE are doing this in school currently and I don't know if you know this or not, but everything is a variation of V=IR except when adding current and resistance in series/parallel. What i find that helps in this situation is to go through it step by step to figure out what's series and parallel and adding them together step by step.
 
J-Fly said:
WE are doing this in school currently and I don't know if you know this or not, but everything is a variation of V=IR except when adding current and resistance in series/parallel. What i find that helps in this situation is to go through it step by step to figure out what's series and parallel and adding them together step by step.

I'm not quite sure how I can add anything if a cell is present. Do I add it normally or do I have to include the cell somehow?
 
YarnJunior said:

Homework Statement


Check the Picture

Homework Equations

The Attempt at a Solution


I've never dealt with a three-cell circuit before. For calculating the current, I tried doing Kirschoff's Voltage Law, all I kept getting was that I1 = negative I2. I tried taking the current as coming out of the 2 voltage cell, but now I'm starting to doubt myself. However, taking it from the other cells doesn't seem to do anything else. I'm not quite sure how to solve b, or c without a. Any help? Thanks!
Please post your attempts, it's not enough to describe them.
 

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