Question

A wire of resistance 10 ohm is bent in the form of a closed circle. What is the effective resistance between the two points at the ends of any fiameter of the circle

Answer 1

Hi. .

when the wire is made into a circle and when 2 points int he ends of the diameter are considered then the resistor willget split up into 2
resitors each of 5 ohms and these 2 resistors will be in \\ connection
i.e..
    Re=(1/5+1/5)^(-1)      which we will get in substiting the \\ resistence formula 
when we equate it we'll get 2.5 ohm.



Hope this helps u!!