Troubleshooting Circuit with Kirchhoff's Laws

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    Kirchoff Laws
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Discussion Overview

The discussion revolves around troubleshooting a circuit using Kirchhoff's Laws, focusing on the setup and analysis of the circuit created by the original poster. Participants explore how to approach the circuit, including identifying loops and applying relevant electrical laws.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • The original poster expresses confusion about the circuit they created and questions the feasibility of setting up loops for analysis.
  • One participant suggests replacing R2 and R3 with a single equivalent resistor to simplify the circuit analysis.
  • Another participant argues that calculating the parallel combination of R2 and R3 is unnecessary since they are directly across the voltage source, proposing to use Ohm's law instead.
  • There is a suggestion to write a Kirchhoff's Voltage Law (KVL) equation for the outer loop to find the unknown current.
  • Participants discuss applying Ohm's law to determine the voltage across R1 after finding the current.

Areas of Agreement / Disagreement

Contextual Notes

Participants have not fully resolved the assumptions about the circuit's configuration or the implications of their proposed methods, leaving some steps in the analysis unclear.

Who May Find This Useful

This discussion may be useful for individuals seeking to understand circuit analysis techniques, particularly in the context of applying Kirchhoff's Laws and Ohm's law in practical scenarios.

Kokoska
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Hello, I am quite confused about this circuit:

http://tinypic.com/view.php?pic=1zvtnxf&s=6

It's quite possible, that this circuit doesn't make any sense, it was made by me, out of curiosity.
I know there is a junction, but from there I just can't set up any loops which would make any sense.
Thank you for your help.
 
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Anyone? Just give me a hint please?
 
Your R2 and R3 are in parallel replace them with a single equivalent resistor. Now draw somr loops,
 
No need to calculate the parallel combination of R2 & R3.

R2 and R3 are directly across the 18V source so just apply Ohms law to find the current through each of them.

As for the outer loop... write an equation using KVL. Everything is known except for the current so you can solve for that. Apply Ohms law to work out voltage across R1.
 

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