Node Voltage analysis- electrical engineering

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Discussion Overview

The discussion focuses on applying node voltage analysis to an electrical circuit to determine the power dissipated by each resistor. Participants are exploring the steps needed to proceed from their current equations to the final power calculations.

Discussion Character

  • Technical explanation
  • Homework-related
  • Mathematical reasoning

Main Points Raised

  • One participant has applied node voltage analysis and seeks guidance on the next steps to find power dissipated by each resistor.
  • Another participant mentions that knowing the potential across each resistor allows for a straightforward calculation of power.
  • A different participant asks for clarification on which voltage and current values to use in the power equation.
  • One suggestion is made to combine the power equation with Ohm's law to assist in the calculations.

Areas of Agreement / Disagreement

Participants are engaged in a collaborative exploration of the problem, with some seeking clarification and others providing suggestions. No consensus has been reached on the specific next steps or the correctness of the initial equations.

Contextual Notes

Participants have not fully resolved the assumptions regarding the circuit configuration or the specific values needed for the power calculations.

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http://i39.tinypic.com/28akmfk.jpg


Ultimately, I am trying to find power dissipated by each resistor.

I already applied node voltage analysis to the circuit.

The picture shows the diagram of the problem and my attempted solution/ equations I came up with. In the diagram, I labeled the nodes and reference node. All else was given in the diagram.

Please let me know what the next step is in order to find power dissipated by each resistor,
or if my equations for node voltage are not correct.

Thank you in advance.
 
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If you have the potential over each resistor there is a very simply relationship that determines the power.
 
Last edited:
can you explain please?
i know that power P= current(I) x Voltage (V)

which v and I should i use?
 
Try combine the power equation you gave last with Ohm's law.
 

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