How should I Approach this Circuit Calculation?

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Discussion Overview

The discussion revolves around a circuit calculation involving resistors and a dependent current source. Participants are exploring methods to determine the power provided by the source and the power dissipated in the resistors using nodal analysis.

Discussion Character

  • Homework-related
  • Technical explanation
  • Exploratory

Main Points Raised

  • One participant is applying nodal analysis but is uncertain about how to find the resistance associated with the current Ix.
  • Another participant clarifies that an ideal voltage source has a resistance of zero and an ideal current source has infinite resistance.
  • A participant seeks confirmation on whether the power being calculated is from the indicated current source.
  • There is a suggestion that finding the power from the dependent current source might be easier than analyzing the entire circuit for voltages and currents.
  • One participant requests to see the work done by the original poster to provide more effective assistance.
  • A later reply comments on the legibility of the work submitted by the original poster.

Areas of Agreement / Disagreement

Participants appear to have differing levels of understanding regarding the application of nodal analysis and the specifics of the circuit components. There is no consensus on the best approach to solve the problem, and the discussion remains unresolved.

Contextual Notes

Some assumptions about the circuit configuration and the definitions of the components may be missing, which could affect the analysis. The discussion does not resolve the mathematical steps needed to find Ix or the power calculations.

REEEEEEEE
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Homework Statement:: R1 = 2kOHms; R2 = 2kOHms; R3 = 3kOHms;
R4 = 3kOHms; VS = 25V; IS = 10mA
[5,5] a) Determine the power
provided by the source dependent on
current using method
of the nodes
[3.0] b) What is the value of electrical power
dissipated in all resistors in the circuit?
Relevant Equations:: V=IR
P=VI

Captura de ecrã 2021-11-30 173328.png


I am currently applying nodemethod but I got to the Ix part and I don't know what is the R of Ix now how to find it.
Can you give me some sugestions please?
 
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REEEEEEEE said:
... I got to the Ix part and I don't know what is the R of Ix now how to find it.
Can you give me some sugestions please?
An ideal voltage source maintains voltage, independent of current. Rv = dv/di = 0.
An ideal current source maintains current, independent of voltage. Ri = dv/di = ∞.
 
REEEEEEEE said:
[5,5] a) Determine the power
provided by the source dependent on
current using method
of the nodes
Just to be clear, you are looking for the power produced by the indicated current source?
1638298978000.png
 
gneill said:
Just to be clear, you are looking for the power produced by the indicated current source?
View attachment 293358
I am looking or the current Ix and the afte geting it and vx I will look for the power
 
REEEEEEEE said:
I am looking or the current Ix and the afte geting it and vx I will look for the power
If the object is to find the power produced by that dependent current source, then there may be an easier way to find it than analyzing the whole circuit to find ##V_x## and ##I_x##.

By inspection of the circuit, what must be the potential difference across that current source? Hint: look at the node potentials where it connects.
 
Well, you've got a circuit with a lot of known components and some variables. Show us what you HAVE done. We don't give help without seeing that you have put in some effort.
 
phinds said:
Well, you've got a circuit with a lot of known components and some variables. Show us what you HAVE done. We don't give help without seeing that you have put in some effort.
I am sorry.
Here's my work
unnamed (1).jpg
 
Too bad it's not really legible
 

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