Simple application of nodal analysis

Click For Summary
SUMMARY

The forum discussion centers on the application of nodal analysis in electrical engineering, specifically addressing a user's incorrect calculation of voltage V1. The user initially calculated V1 incorrectly, obtaining a value that differed from the expected 37.818V. The error was traced back to a transcription mistake in the equations, where the coefficient of V2 was incorrectly noted as -4 instead of -14. Correcting this mistake led to the accurate solution.

PREREQUISITES
  • Nodal analysis in electrical circuits
  • Basic algebraic manipulation
  • Understanding of voltage and current relationships
  • Familiarity with linear equations
NEXT STEPS
  • Review the principles of nodal analysis in electrical engineering
  • Practice solving linear equations with multiple variables
  • Learn about common mistakes in circuit analysis
  • Explore software tools for circuit simulation and analysis
USEFUL FOR

Electrical engineering students, circuit designers, and anyone involved in analyzing electrical networks will benefit from this discussion.

PainterGuy
Messages
938
Reaction score
73
Hi, :smile:

Almost all the details you will find in the given link below:
http://img710.imageshack.us/img710/1565/exampleproblemnodalysis.jpg

You will find the expected (or, target answers) in the top right corner.

As you can see my value for V1 is utterly wrong. It should have been 37.818V according to the answer given in the book. I have checked my equations several times but I found nothing wrong with them. Please help me with it. Many thanks for your help.

Cheers
 
Physics news on Phys.org
You have the two equations as follows:

1 ... 3(V1) - 2(V2) = 48
2 ... 10(V1) - 14(V2) = -80

You copied the -14 into your matrix as -4. If you put in -14 you should get the right answer.

Silly mistake and trivial to find.
 
Many thanks, Zryn. You are so nice. You have helped me a lot.

Cheer
 

Similar threads

Electric Circuit Analysis, Nodal Analysis and finding Voltage.
  • · Replies 2 ·
Replies
2
Views
2K
Help with Circuit Nodal Analysis
  • · Replies 2 ·
Replies
2
Views
2K
Engineering Nodal Analysis of this Circuit using the Laplace Transform
  • · Replies 4 ·
Replies
4
Views
4K
Nodal Analysis Problem help (Double Supermesh)
  • · Replies 1 ·
Replies
1
Views
3K
Engineering Solve this Circuit using both Nodal Analysis and Mesh Analysis
  • · Replies 15 ·
Replies
15
Views
4K
Mesh and nodal analysis don't quite match, but why?
  • · Replies 5 ·
Replies
5
Views
3K
How to solve a nodal analysis homework question?
  • · Replies 16 ·
Replies
16
Views
2K
Engineering Nodal analysis of a fairly simple circuit
  • · Replies 6 ·
Replies
6
Views
2K
Using Nodal Analysis to determine current in a resistor
  • · Replies 1 ·
Replies
1
Views
3K
Engineering Struggling with Nodal Analysis and Voltage Calculations
  • · Replies 3 ·
Replies
3
Views
2K