Q. A student has 10 resistors of resistance $'r^{'}.$ The minimum resistance made by him from given resistors is
A) $10\ r$
B) $\frac{r}{10}$
C) $\frac{r}{100}$
D) $\frac{r}{5}$
Explanation
(b) To obtain minimum resistance, all resistors must be connected in parallel.
Hence equivalent resistance of combination of combination $= \frac{r}{10}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.