Nodal Analysis for Electrical Engineering Homework Help

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Discussion Overview

The discussion revolves around a homework problem related to nodal analysis in electrical engineering, specifically focusing on calculating voltages across resistors in a circuit. Participants are seeking clarification and step-by-step guidance on applying nodal analysis techniques.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • The original poster (OP) expresses difficulty in applying nodal analysis to find voltages across 2k and 5k resistors.
  • One participant reminds the OP of forum rules requiring an attempt at the problem before seeking help and suggests using Kirchhoff's Current Law (KCL) or Kirchhoff's Voltage Law (KVL).
  • The OP indicates they have attempted to apply KCL but are still confused about the voltage calculations.
  • Another participant proposes taking the top node as a reference voltage (vo) and suggests a potential equation involving the node voltages and resistances, although they express uncertainty about the formulation.
  • A later reply reiterates the suggestion to apply KCL at the top node without providing further details.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the specific steps to solve the problem, and multiple approaches are suggested without resolution of the confusion expressed by the OP.

Contextual Notes

The discussion lacks detailed assumptions about the circuit configuration and does not clarify the specific values or connections of the components involved, which may affect the application of nodal analysis.

akshaymaharaj
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Homework Statement



Im a first electrical eng student learning nodal analysis.I require help with a specific problem from fundementals of electric circuits.Please explain step by step as i am new to this.Please see the attachment for the problems.
I am finding it hard to express the voltages across the 2k and 5k resistors.
Any help would be greatly appreciated!.Thanks in advance!



Homework Equations





The Attempt at a Solution

 

Attachments

Physics news on Phys.org
Hello akshay! Welcome to PF!
The forum rules says that the OP needs to show his/her attempt before asking for help on the problem.
Did you try to apply KCL or KVL? There is even a shorter method too to solve this problem.
 
ive tried applying it but can't seem to understand how to get the voltage across the 2k and 5k resistors please help!.Im begging.
 
i think u take the node at the top and maybe the top equals vo
so at the node so you have (vo-30)/2k+(vo-20)/5k+vo/4k
or something like that, I am not really sure I am a first year engineering student too :)
 
eg Apply KCL at the top node.
 

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