Voltage Division with Multiple Voltage Sources Seperated by Resistors

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Discussion Overview

The discussion revolves around finding the voltage across a 10 ohm resistor in a circuit with multiple voltage sources separated by resistors. Participants explore the application of Kirchhoff's Voltage Law (KVL), Ohm's Law, and the voltage division principle in this context.

Discussion Character

  • Homework-related
  • Technical explanation
  • Exploratory

Main Points Raised

  • The initial poster expresses uncertainty about how to approach the problem, indicating difficulty in applying KVL, Ohm's Law, or the voltage division equation due to the complexity introduced by multiple voltage sources and resistors.
  • One participant suggests replacing the multiple voltage sources with a single equivalent source to simplify the analysis.
  • Another participant confirms the proposed simplification and provides a calculation for the voltage across the 10 ohm resistor using the voltage division formula, resulting in a value of 6/5V.
  • A later post thanks the participants for their assistance, indicating appreciation for the help received.
  • One participant notes potential issues with the image hosting service used for circuit diagrams, suggesting that it may hinder understanding for others following the discussion.
  • Another participant provides the images again to ensure clarity in the discussion.

Areas of Agreement / Disagreement

Participants generally agree on the approach of simplifying the circuit by replacing multiple voltage sources with a single equivalent source. However, the initial poster's uncertainty about the application of relevant laws and equations indicates that the discussion remains exploratory and unresolved in terms of complete understanding.

Contextual Notes

The discussion highlights limitations in the initial poster's understanding of circuit analysis techniques and the potential for confusion due to the complexity of the circuit configuration. There are also concerns about the reliability of the image hosting service affecting the clarity of the discussion.

TheCarl
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Homework Statement


Find the voltage across the 10 ohm resistor.
http://www.spacemonkeybrewing.com/images/circuit.jpg

Homework Equations



KVL - Sum of Voltages in a closed loop equal zero.
Ohms - V=IR
Voltage Divide - Va1 = (R1/(R1+R2...))Vs

The Attempt at a Solution



This is only the second week into the introduction of electrical circuits and I'm not sure where to start here. It doesn't look like I can use KVL, Ohms law or the voltage division equation to solve this problem. I would know how to solve it if it only had a single voltage source or voltage sources that aren't divided by resistors. Any assistance would be greatly appreciated.
 
Last edited by a moderator:
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Hi TheCarl, http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

You can replace the 3 voltage sources by 1. Try that and see how you go. :smile:
 
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So are you saying that basically the circuit above would be equivilant to this:
http://www.spacemonkeybrewing.com/images/circuit2.jpg

And therefore V = (10Ω/(15Ω+10Ω+20Ω+5Ω))6V = 6/5V ?P.S. Thanks for the quick reply.
 
Last edited by a moderator:
TheCarl said:
And therefore V = (10Ω/(15Ω+10Ω+20Ω+5Ω))6V = 6/5V
That's the idea.
 
Thank you so much!
 
For future reference: your pic archive site seems slow or unreliable, and the pic is some of the time failing to appear. I venture that some people will be reading this and wondering where's the circuit we are discussing? For next time, I suggest that you try out another site, or else attach your pic to your post.
 
Here are the two photos in order in case they don't show up in the above threads.
 

Attachments

  • circuit.jpg
    circuit.jpg
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  • circuit2.jpg
    circuit2.jpg
    9.2 KB · Views: 438

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