9 A potentiometer with driver battery of emf 2 V is used for

Last updated: 6/11/2023

9 A potentiometer with driver battery of emf 2 V is used for determination of internal resistance of 1 5 V cell The balance point of the cell in open circuit is 225 cm When a resistance of 7 0 is used in external circuit across of the cell the balance point shifts to 210 cm length of potentiometer wire The internal resistance of the cell is NCERT Pg 131 1 12 2 0 5