A potentiometer having a wire of length 10 m and resistance

Last updated: 6/24/2023

A potentiometer having a wire of length 10 m and resistance 20 Q is connected to an accumulator of e m f E through a resistance box When the resistance in the box is 20 a null point is observed at 5 m for a cell of e m f E The ratio of E to E is A 1 4 C 3 1 B LD 2 1 4 1