1 A cell of emf E in the secondary circuit gives null

Last updated: 6/26/2023

1 A cell of emf E in the secondary circuit gives null deflection for 1 5 m length of potentiometer of wire length 10 m If another cell of emf E2 is connected in series with E then the null deflection was obtained for 2 5 m length of potentiometer Then E E2 is 1 3 5 2 2 3 3 3 2 4 5 3 RK C