Question

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

Answer 1

I think the diameter divide the circle in two equal parts so the two resistor were 5 - 5 ohm & lie in parallel

1/5+1/5=1/Re
2/5=1/Re
Re=5/2
Re=2.5 ohm