NEET 2019 PatternMedium
Q.In potentiometer experiment to measure internal resistance, a resistance R is connected in series with cell. The ratio (balancing length without R)/(balancing length with R) is
a
(r + R)/R
b
(R + r)/r
c
R/(R + r)
d
(r + R)/r
Correct Answer: Option A
The correct solution involves applying the fundamental concept to derive the final value step by step...