Find Resistance b/w 2 Ends: Resnik & Halliday, Vol2, Pg723, Fig31-41

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SUMMARY

The discussion focuses on calculating the equivalent resistance between two ends in a circuit presented in Resnik & Halliday, Volume 2, page 723, figure 31-41, involving resistors of 20 ohms and 10 ohms. Participants emphasize the necessity of understanding Kirchhoff's Current Law (KCL) to solve the problem effectively. A key suggestion includes utilizing the Y-Delta transformation to simplify the circuit analysis by removing a resistor with zero current due to symmetry. This approach allows for the application of series and parallel resistor formulas to find the total resistance.

PREREQUISITES
  • Understanding of Kirchhoff's Current Law (KCL)
  • Familiarity with series and parallel resistor combinations
  • Knowledge of Y-Delta transformation techniques
  • Basic circuit analysis skills
NEXT STEPS
  • Study Kirchhoff's Current Law (KCL) in detail
  • Learn about Y-Delta transformations and their applications in circuit analysis
  • Practice problems involving series and parallel resistor calculations
  • Explore advanced circuit analysis techniques, such as mesh and nodal analysis
USEFUL FOR

This discussion is beneficial for electrical engineering students, circuit designers, and anyone seeking to enhance their understanding of circuit analysis and resistance calculations.

Aditya3003
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Homework Statement


I need to find to resistance and am having problem as I do not know KCL's. All I know is the total resistance in series or parallel. I have attached the image. Find resistance b/w the 2 ends.

Homework Equations


If you have Resnik & Halliday open page 723(Vol2). and see figure 31-41. My question is same with r = 20ohm & R=10ohm.

The Attempt at a Solution

 

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Aditya3003 said:

Homework Statement


I need to find to resistance and am having problem as I do not know KCL's. All I know is the total resistance in series or parallel. I have attached the image. Find resistance b/w the 2 ends.


Homework Equations


If you have Resnik & Halliday open page 723(Vol2). and see figure 31-41. My question is same with r = 20ohm & R=10ohm.

If you don't know the basic circuit laws it's going to be difficult to proceed; All you can do is try to apply "canned" formulas. Hint: Look up "Y-Delta transformation".
 
One resistor has zero current inside due to symmetry, you can remove it and use your formulas for resistors in series/parallel afterwards.
 

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