Q. When a wire of uniform cross-section a, length $l$ and resistance $R$ is bent into a complete circle, resistance between any two of diametrically opposite points will be
A) $\frac{R}{4}$
B) $\frac{R}{8}$
C) $4R$
D) $\frac{R}{2}$
Explanation
(a) $R_{AB} = \frac{R/2}{2} = \frac{R}{4}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.