Different ways to check the answers

[rootX]

Homework Statement

What are different ways to check your solutions for simple Resistive Circuits?
Or even in general cases, how I can make sure that my answer is right?
I am making very stupid mistakes (mostly algebra problems and using wrong directions),
so I want to make sure that I don't repeat these mistakes in the exam.
I am not very familiar with circuits, so I cannot use reality check (in Physics, it's very simple to guess the answer even without doing detailed calculations)

Homework Equations

I am using Nodal Analysis and Mesh Analysis to solve them

The Attempt at a Solution

Here's a checklist I developed:
# Reviewing Nodal Analysis Questions:

1. I should write detailed steps (neatly) leaving space between lines
2. I should simplify my equations before solving them on calculator
3. After Calculations:
1. See if I have used right numbers
2. See if my equations are right
3. See if my solutions meet with my equations
* See if I have right directions of currents as indicated by diagram
4. If time available, use other techniques to confirm my answers
5. See if power analysis agree...

Thanks.

 

[itsygo]

This is the wrong section to post your homework questions. Try here:https://www.physicsforums.com/forumdisplay.php?f=152

 

[Mene]

I would suggest the following additional ways to check your solutions for simple resistive circuits:

1. Double check your calculations: Make sure to use the correct values for resistors and other components in your circuit. Also, check your calculations for any arithmetic errors or incorrect use of algebraic equations.

2. Use simulation software: There are many simulation software programs available that can help you visualize and analyze your circuit. You can input your circuit and compare the results from the simulation with your calculated values.

3. Verify with a mentor or peer: If possible, ask a mentor or a peer to review your solutions and calculations. They may be able to spot any mistakes that you may have missed.

4. Use different methods: In addition to nodal and mesh analysis, try using other methods such as Thevenin's theorem or Kirchhoff's laws to solve the same circuit. If your answers match, it is a good indication that your solutions are correct.

5. Check for physical feasibility: Make sure that your solutions make physical sense. For example, if you have calculated a negative resistance or current, it is likely that you made a mistake in your calculations.

6. Practice, practice, practice: The more you practice solving circuits, the more familiar you will become with the concepts and equations, and the less likely you are to make mistakes.

Overall, the key is to be thorough and diligent in your calculations, and to always double check your solutions using different methods or tools. Good luck with your exams!