the figure A 4V potentiometer is used for determination of

Last updated: 6/1/2023

the figure A 4V potentiometer is used for determination of internal resistance of a 2 5 V cell The balance point of cell in open circuit is 75 cm when a resistor of 4 is used in the external circuit of the cell the balance point shifts to 60 cm length of potentiometer wire The internal resistance of the cell is