PracticeMedium
Q.In a potentiometer, the null point is obtained at 700 mm for a cell of emf 1.4 V. When a 2 Ω resistance is connected across the cell, the null point shifts to 350 mm. The internal resistance of the cell is
a
b
c
d
Correct Answer: Option A
The correct solution involves applying the fundamental concept to derive the final value step by step...