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Homework Help Overview

The discussion revolves around combining resistors to achieve a specific resistance value, focusing on the use of four given resistors with different resistances. The subject area is electrical circuits, specifically resistor combinations.

Discussion Character

  • Exploratory, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • Participants explore methods for combining resistors to reach a target resistance, questioning whether each resistor must be used exactly once. Some suggest strategies like removing common factors and looking for pairs that can be combined in parallel.

Discussion Status

The discussion is active, with participants sharing thoughts on potential tactics for combining resistors. There is an acknowledgment of the requirement to use each resistor exactly once, and various approaches are being considered without a clear consensus on the best method.

Contextual Notes

Participants are working within the constraints of using each resistor exactly once, which may influence the strategies discussed. The original poster expresses uncertainty about the posting context, indicating a beginner's perspective.

tryingtounderstand
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Homework Statement
Having a hard time finding a perfect combination for desired equivelant resistance
Relevant Equations
For example if we have 4 resistors;
6 ohm/ 9 ohm/ 18ohm /12 ohm
Is there a method to combine them to equal to 6 ohm without wasting time trying different variations
This is my first time idk if i posted in the correct sub
 
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tryingtounderstand said:
if we have 4 resistors;
6 ohm/ 9 ohm/ 18ohm /12 ohm
Is there a method to combine them to equal to 6 ohm
Do you have to use each exactly once?
 
haruspex said:
Do you have to use each exactly once?
Yes
 
tryingtounderstand said:
Yes
There are some tactics...
You can remove a common factor.
Look for pairs which, put in parallel, give simple equivalents.
 

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