Solve Equivalent Resistance: Points A and B

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Homework Help Overview

The discussion revolves around finding the equivalent resistance between points A and B in a circuit diagram linked in the thread. The problem involves analyzing resistors in series and parallel configurations.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants explore the arrangement of resistors, with some suggesting that certain resistors are in series while others are in parallel. There is an attempt to calculate the equivalent resistance using the provided formulas, but discrepancies in results lead to further questioning.

Discussion Status

Some participants have offered calculations and methods for approaching the problem, while others are questioning the assumptions made about the circuit configuration. There is no explicit consensus on the correct approach or solution yet.

Contextual Notes

One participant notes a discrepancy between their calculated result and the answer provided in a textbook, prompting questions about the correct methodology. Additionally, there is a discussion about the application of voltage rules in the context of the circuit.

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Homework Statement



https://www.physicsforums.com/attachment.php?attachmentid=11955&stc=1&d=1197437955

Find the equivalent resistance between points A and B shown in the link above

Homework Equations



for parallel, equivalent resistance is =1/R1 +1/R2 +1/R3...
equivavalent resistance for series is = R1 + R2 + R3

The Attempt at a Solution



i believe they are all parallel or R3, R4, R5, and R6 are series becouse they depend on each other
 

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1/R= 1/1.5 + 1/2.5 + 1/4.3 +1/3.3 + 1/8.1 +1/6.3 =1.88
r=.53 ohm. this is not correct. the back of my book says .838 and can someone tell me how they got that answer
 
First find the parallel resistance of R3, R4 and R5, call it maybe R'. Now you see that R1, R2 and the series combination (R'+R6) are in parallel. That will give you the answer.
 
when can you say that the voltage in the loop will be zero? not in this case?
 
The voltage around any loop is zero, but that is not needed here. This problem can be solved using series and parallel rules for combining resistors.
 

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