One of the circuits for the measurement of resistance by

Last updated: 6/25/2023

One of the circuits for the measurement of resistance by potentiometer is shown The galvanometer is connected at point A and zero deflection is observed at length PJ 30 cm In second case the secondary cell is changed Take Es 10 V and r 10 in 1st reading and Es 5V and r 20 in 2nd reading In second case the zero deflection is observed at length PJ 10 cm What is the resistance R in ohm Ep P R wwww www J A