Q. Six equal resistances are connected between points P, $\mathcal{Q}$ and R as shown in the figure. Then the net resistance will be maximum between
A) $P$ and $\mathcal{Q}$
B) $\mathcal{Q}$and R
C) P and R
D) Only two points
Explanation
(a) $R_{PQ} = \frac{5}{11}r,\ R_{QR} = \frac{4}{11}r\ and\ R_{PR} = \frac{3}{11}r$
$\therefore R_{PQ}\ $is maximum.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.