Solving Circuit Problem: 3 & 2 Ohms Resistors

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SUMMARY

The discussion focuses on solving a circuit problem involving 3 and 2 Ohm resistors, emphasizing the need to simplify the circuit for analysis. The key equations provided are Req = R1 + R2 for series connections and Req = (R1*R2)/(R1 + R2) for parallel connections. Participants are advised to re-draw the circuit with the 5 and 20 Ohm resistors in a vertical position to better visualize the connections. The importance of recognizing that terminals can be moved along a continuous wire path is also highlighted.

PREREQUISITES
  • Understanding of series and parallel resistor configurations
  • Familiarity with Ohm's Law and equivalent resistance calculations
  • Basic circuit diagram interpretation skills
  • Knowledge of circuit simplification techniques
NEXT STEPS
  • Study circuit simplification techniques using Thevenin's and Norton's theorems
  • Learn about Kirchhoff's laws for analyzing complex circuits
  • Explore practical applications of resistor combinations in real-world circuits
  • Investigate simulation tools like LTspice for circuit analysis
USEFUL FOR

Electrical engineering students, hobbyists working on circuit design, and anyone seeking to enhance their understanding of resistor networks and circuit simplification methods.

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Homework Statement



lol.png


Homework Equations


Req =R1 + R2

Req = (R1*R2)/(R1 +R2)


The Attempt at a Solution



No idea how to do that . Was thinking maybe making the 3 and 2 ohms resistors equivalent (assuming parallel). I have no idea what to do with the top wire . How do I simplify this circuit?
 
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The 2 and 3 Ohm resistors are not in parallel (their upper ends are not connected).

Hint: Re-draw the circuit with the 5 and 20 Ohm resistors in a vertical position.
 
RiceKernel said:

Homework Statement



lol.png


Homework Equations


Req =R1 + R2

Req = (R1*R2)/(R1 +R2)


The Attempt at a Solution



No idea how to do that . Was thinking maybe making the 3 and 2 ohms resistors equivalent (assuming parallel). I have no idea what to do with the top wire . How do I simplify this circuit?

You're allowed to re-arrange the components on the page so long as all the connections remain the same. Take a close look at how the 5 and 20 Ohm resistors are connected. Better yet, move terminals a and b to the other end of the circuit. You can do this because a continuous wire path is all the same node, and anything connected to it can be moved to another point on the same conductor.

attachment.php?attachmentid=73120&stc=1&d=1410636187.gif
 

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