Question

9. In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at
a length of 2 m when the cell is shunted by a 4 ohm resistance and at
3 m when cell is shunted by a 8 ohm resistance.
The internal resistance of cell is -
(A) 12
(B) 8
(C) 16
(D) 1​

Answer 1

Answer:

In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of 2m when the cell is shunted by a 5ω resistance and is at a length of 3m when the cell is shunted by a 10ω resistance, the internal resistance of the cell is then. ... 10ω C. 15ω