Quick question Superposition method

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SUMMARY

The discussion focuses on the application of the superposition method to find voltage across a 30-ohm resistor in a circuit. The user outlines three parts of their approach: eliminating sources, transforming a battery to a current source, and applying mesh analysis. Feedback indicates that while the loop equations are generally correct, there is an error in determining the current I4 during the first part. Additionally, a suggestion is made to simplify the analysis by combining parallel resistors before applying the superposition method.

PREREQUISITES
  • Understanding of superposition theorem in circuit analysis
  • Familiarity with mesh analysis techniques
  • Knowledge of Ohm's Law for voltage and current calculations
  • Ability to manipulate circuit components, including transforming voltage sources to current sources
NEXT STEPS
  • Review the superposition theorem in electrical circuits
  • Learn advanced mesh analysis techniques for complex circuits
  • Study methods for combining resistors in parallel and series
  • Practice circuit analysis problems involving multiple sources and components
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Electrical engineering students, circuit designers, and anyone involved in circuit analysis and troubleshooting using the superposition method.

Marchese_alex
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Ok, can anyone tell me if my steps are correct. Find volts in the 30ohms

part1
1. eliminate current source
2. transform battery to current source
3. applied mesh method to find current at 30ohms

part2
1. eliminate battery source
2. applied mesh method to find current at 30ohms

part3
1. to find the current at 30ohms I substracted the current that I got from doing part 1 and doing part 2 to get the actual current at the 30ohms
2. Finally used ohms law to find voltage

Is this correct? I know there are easier ways but I did it this way
 

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Your loop equations all look okay, but something seems to have gone wrong with your determination of I4 in the first part (where you suppressed the current source and converted the voltage source).

Why not consider combining the parallel 20, 40, and 60 ohm resistors to begin with; it'd make your analysis simpler.
 

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