What is the Resistance Between Two Points in an Infinite Grid?

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SUMMARY

The resistance between two points in an infinite grid is determined by the arrangement of resistors in parallel. As the number of resistors increases, the equivalent resistance approaches zero. Specifically, for a side of the largest square with resistance R, the resistance values for n=1, n=2, and n=3 are 1, sqrt(2)/2, and 2/3 respectively. However, the general case indicates that with an infinite number of parallel resistors, the total resistance converges to zero.

PREREQUISITES
  • Understanding of electrical resistance and Ohm's Law
  • Familiarity with series and parallel resistor configurations
  • Basic knowledge of infinite series and limits
  • Concept of equivalent resistance in circuits
NEXT STEPS
  • Study the principles of infinite series in electrical circuits
  • Learn about the mathematical derivation of equivalent resistance in parallel circuits
  • Explore advanced topics in circuit theory, such as network theorems
  • Investigate practical applications of infinite grids in electrical engineering
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Electrical engineers, physics students, and anyone interested in circuit analysis and the behavior of resistors in complex networks.

FermatPell
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Homework Statement



What is the resistance between A i B if resistance is proportional to length, and the resistance of a side of the largest square is R?

Homework Equations



This is nothing more than a bunch of serial (parallel) resistors.

The Attempt at a Solution



n=1 => R=1
n=2 => R=sqrt(2)/2
n=3 => R=2/3

but i can't find it for general N

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If I understand your problem correctly, the answer is zero resistance, seeing as the more resistors which are added in parallel in a circuit, the lower the resistance. If there are an infinite number, than there is an equivalent resistance of zero.
 
The resistance is definitely greater than zero.
 

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