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

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The discussion focuses on finding the equivalent resistance between two points in a circuit depicted in Resnik & Halliday, Vol2, Pg723, Fig31-41. The user struggles with applying Kirchhoff's Current Law (KCL) and is only familiar with calculating total resistance in series and parallel configurations. Suggestions include utilizing "Y-Delta transformation" to simplify the circuit and noting that one resistor can be removed due to symmetry, allowing for easier calculations. Understanding basic circuit laws is emphasized as crucial for solving the problem effectively. The conversation highlights the importance of foundational knowledge in circuit analysis for accurate resistance calculations.
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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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