How to solve a circuit mystery box

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SUMMARY

The discussion centers on solving a circuit mystery box containing five identical 10k ohm resistors, with configurations including series and a combination of series and parallel connections. The user attempts to measure resistance between various terminal pairs but struggles to deduce the correct connections due to insufficient evidence and vague problem statements. Key measurements include resistance values of 10k, 20k, and 30k ohms between different terminals, indicating potential series connections. The conversation concludes with a call for visual aids, such as diagrams, to facilitate understanding.

PREREQUISITES
  • Basic understanding of electrical circuits and components
  • Knowledge of series and parallel resistor configurations
  • Familiarity with using an ohmmeter for resistance measurements
  • Ability to interpret resistance values and their implications in circuit design
NEXT STEPS
  • Study series and parallel resistor calculations in detail
  • Learn how to create circuit diagrams using software like Fritzing or CircuitLab
  • Explore troubleshooting techniques for circuit analysis
  • Research visual learning strategies for complex electrical concepts
USEFUL FOR

Electronics students, hobbyists working on circuit design, and anyone interested in understanding resistor configurations and circuit analysis techniques.

Sage4
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Member warned that homework questions must be posted in a Homework section, with efforts shown.
How can I solve a ciruit mystery box only knowing there are 5 identical resistors inside. I have two to solve, one they're all in serie and the other is a combination serie and parallele. My mystery box has 6 «plugs» and i can connect 2 plugs at a time to an ohmmeter. I've been trying for days and i need a clue on how to solve or at least begin to solve those mystery boxes. Sorry for the bad english.
 
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Insufficient evidence on which to base any conclusion.
 
What do you mean by evidence?
 
Well, for example, all 6 of the plugs could be connected to nothing at all, or all 6 could be connected to the same point. You have shown no evidence to refute either of those possibilities. Many of the possible combinations of circuit layouts have fewer than 6 nodes, so there is no possibility that all 6 plugs could be connected to different points in all cases.

In other words, the problem statement is so vague that there IS no solution.
 
Could the resistance values i obtained be evidence? If yes, here's an example. All resistor are 10k ohm and they're all in serie. With 6 «plugs» or nodes like you said, i have the 15 following combinations. What conclusions could be made? The colors are because I'm more of a visual learner.
124657730_782801952577101_4577137079619889906_n.jpg
 
Measure and record the resistance between;
Terminal; t1 and t2=30k, t3=20k, t4=30k, t5=20k, t6=10k
Terminal; t2 and t3=10k, t4=20k, t5=30k, t6=20k
Terminal; t3 and t4=10k, t5=20k, t6=10k
Terminal; t4 and t5=30k, t6=20k
Terminal; t5 and t6=10k

Notice the 5x 10k ?
The 5x 10k resistors are between; t1-t6, t2-t3, t3-t4, t3-t6, t5-t6.

Notice there are three arms from t3 and from t6.
But t3 and t6 are connected by 10k.

t2 and t4 are each connected by 10k to t3.
t1 and t5 are each connected by 10k to t6.
t1, t2, t4 and t5 are the terminal ends of the circuit.
Now check all the 20k and 30k values are series connected paths on the same diagram.
 
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Ok I've been trying with those info, but i still can't figure the way the terminals are connected with one another for the circuit to be correct. As i said I'm more of a visual learner so a diagram would help me understand what you just said.
 
Sage4 said:
Ok I've been trying with those info, but i still can't figure the way the terminals are connected with one another for the circuit to be correct. As i said I'm more of a visual learner so a diagram would help me understand what you just said.
I find it a bit odd considering YOU are the one who is asking the questions that YOU have not made any attempt at providing a diagram when YOU openly admit you are a visual learner so a diagram would help. So let's see some effort on your part. Otherwise, this:
phinds said:
Insufficient evidence on which to base any conclusion.

is quite an appropriate answer.
 
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Thread locked - the post was misplaced homework with no effort shown.
 

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