Thevenin's Problem: Solve for Voltage, Current, Power

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    Circuit analysis
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Homework Help Overview

The discussion revolves around a problem related to Thevenin's theorem, specifically focusing on calculating voltage, current, and power in a circuit with resistances. Participants are exploring the relationships between load resistance and Thevenin's resistance.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the initial steps of removing the load resistance and calculating voltage at specific junctions. There are inquiries about how to proceed with finding other circuit values and the implications of the source impedance.

Discussion Status

The conversation is ongoing, with some participants providing initial calculations and others seeking further clarification on subsequent steps. There is a collaborative effort to guide each other through the problem without reaching a definitive conclusion.

Contextual Notes

Participants are working under the constraints of homework guidelines, which may limit the extent of assistance provided. There is a focus on understanding the setup and definitions related to Thevenin's theorem.

merchant
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Homework Statement



vuZohAF.png

Homework Equations


V=IR
P=I^2R
maximum power when load resistance = thevenin's resistance

The Attempt at a Solution


I have been able to work out the new load resistance but none of the other values correctly.
 
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1. Remove RL. Now the voltage at the junction between 20Ω and 30Ω is \frac{30\Omega}{(20+30)\Omega}\cdot 15V = 9V with a source impedance of 20\Omega \left\lvert \right\rvert 30\Omega =\frac{20\cdot 30}{20 + 30}\Omega...
 
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Svein said:
1. Remove RL. Now the voltage at the junction between 20Ω and 30Ω is \frac{30\Omega}{(20+30)\Omega}\cdot 15V = 9V with a source impedance of 20\Omega \left\lvert \right\rvert 30\Omega =\frac{20\cdot 30}{20 + 30}\Omega...

Thank you for your reply, also how do you calculate the other values
 
merchant said:
Thank you for your reply, also how do you calculate the other values
I have given you the first steps. Now try the next: With RL still disconnected, find the voltage and the source impedance at point A.
 

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