The effective resistance between points P and Q of the  electrical circuit shown in the
Channel: Doubtnut
Date: 2020-07-05

The effective resistance between points P and Q of the  electrical circuit shown in the figure is  (a) `(2Rr)/(R+r)`  (b)`(8R(R+r))/(3R +r)`  © `2r + 4R`  (d) `(5R)/2 + 2r` .