Electric Circuit with Equal Resistances: How to Determine Currents?

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SUMMARY

The discussion focuses on solving an electric circuit problem involving equal resistances of 360 ohms and various voltage and current sources. The circuit analysis can be effectively performed using Kirchhoff's Laws, specifically applying the equations V=IR to determine the current intensities across the resistances. Additionally, methods such as symmetry considerations and Thevenin and Norton theorems are suggested as alternative approaches for solving the circuit. The problem includes scenarios with both voltage and current sources, emphasizing the versatility of circuit analysis techniques.

PREREQUISITES
  • Understanding of Kirchhoff's Laws for circuit analysis
  • Familiarity with Ohm's Law (V=IR)
  • Knowledge of Thevenin and Norton theorems
  • Basic concepts of electrical circuits and resistances
NEXT STEPS
  • Study Kirchhoff's Current and Voltage Laws in detail
  • Learn how to apply Thevenin's and Norton's theorems in circuit analysis
  • Explore symmetry considerations in electrical circuits
  • Practice solving circuit problems with varying sources and configurations
USEFUL FOR

Students preparing for electrical engineering exams, educators teaching circuit analysis, and anyone looking to enhance their understanding of electrical circuits and current flow.

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Homework Statement



The Problem Statement :

All resistances are equal and worth to 360 ohm

1°)We set between A et B a source of tension E ; [tex]E=U_A_B=12 volts[/tex],
Determine the intensities of the current in all resistances in this electric circuit.

2°)Take again question 1 but this time the source of tension is setted between A and D

3°) Take again question 1 and 2 the source of tension is replaced by a current source delivering an intensity of 20 milliamperes.

The electrical circuit for solve this problem :

[URL=http://img388.imageshack.us/my.php?image=sanstitredu6.jpg][PLAIN]http://img388.imageshack.us/img388/5952/sanstitredu6.th.jpg[/URL]http://g.imageshack.us/thpix.php [/PLAIN]






Homework Equations



I Haven't idea because I don't understand this lesson. I want absolutely that anyone help me please.



The Attempt at a Solution



I need Help because tomorow I Have test but I don't understand this exercise. Thank You
 
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Problems like that can always be solved with 2 Kirchhoffs Laws. Define currents across resistances as I1, I2... and the total current I. Then use V=IR. and http://theory.uwinnipeg.ca/physics/curr/node8.html" to get a number of equations for currents, which you can solve simultaneously.
This always works.
But there are some other methods, e.g. considerations of symmetry, or Thevenin, Norton theorems.. etc
 
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