Solving for Req in a Series Circuit - Understanding Resistors and Voltage

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Discussion Overview

The discussion revolves around solving for the equivalent resistance (Req) in a series circuit involving resistors. Participants explore the relationships between resistors in series and parallel configurations, as well as the implications of these configurations on the overall resistance.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant attempts to calculate Req by summing resistances, proposing that the total resistance is 12.5 ohms based on their interpretation of the circuit.
  • Another participant points out the absence of the circuit diagram, which is crucial for understanding the problem.
  • A later reply confirms that the middle branch can be replaced with 5 ohms but clarifies that this 5 ohm resistance does not add in series with the adjacent resistor, suggesting instead that they are in parallel.
  • This participant indicates that the parallel combination should then be added in series with the other resistors in the circuit.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the calculation of Req, as there are differing interpretations of how the resistors are configured in the circuit.

Contextual Notes

The discussion lacks a visual representation of the circuit, which may contribute to misunderstandings regarding the arrangement of the resistors and the calculations involved.

J.live
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Homework Statement



Solve for Req



The Attempt at a Solution



The resistors in the middle can be added to total of 5 ohms. So then then 5v +5ohms = 10 ohms

Then they are all in series 1.5+10+ 1.5= 12.5? What I don't understand is what do i do with
Rx? or 12.5 is Req?

Here is the circuit:
 

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hmm. just an fyi: i don't see any circuit beneath your promise for the circuit
 
Sorry about that.
 
you are correct that the middle branch can be replaced with 5 ohms. However, it does not add in series with the other 5 ohm resistor to its right. instead, they add in parallel. Then that parallel combination adds in series with the 1.5 and 1 ohm resistors.
 

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