Q. A wire of resistance $R$ is cut into $'n'$ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be
A) $nR$
B) $\frac{R}{n}$
C) $\frac{n}{R}$
D) $\frac{R}{n^{2}}$
Explanation
(d) Resistance of each part will be $\frac{R}{n};$ such $n$ parts are joined in parallel so $R_{eq} = \frac{R}{n^{2}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.