- #1

logearav

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## Homework Statement

A wire of resistance 8R is bent in the form of a circle. What is the effective resistance between the ends of a diameter AB?

## Homework Equations

I have attached the image and my attempt to solve it as told by my teacher.

## Homework Equations

## The Attempt at a Solution

But I don't know why the reciprocal formula is used. Please help.