Two cells of emfs approximately 5V and 10V are to be

Last updated: 6/8/2023

Two cells of emfs approximately 5V and 10V are to be accurately compared using a potentiometer of length 400 cm NCERT Exemplar a The battery that runs the potentiometer should have voltage of 8V b The battery of potentiometer can have a voltage of 15 V and R adjusted so that the potential drop across the wire slightly exceeds 10 V c The first portion of 50 cm of wire itself should have potential drop of 10 V d Potentiometer is usually used for comparing resistan and not voltages