A potentiometer wire AB is 2 m long and has total resistance

Last updated: 6/19/2023

A potentiometer wire AB is 2 m long and has total resistance of 10 2 Galvanometer shows zero deflection at C when switch S is closed and at point D when switch is open If E 10 V and R 9r then CD is equal to X cm Find the value of 20 V Answer ww r