AB is a potentiometer wire of length 100 cm and its

Last updated: 6/25/2023

AB is a potentiometer wire of length 100 cm and its resistance is 10 ohm It is connected in series with a battery of emf 2V and resistance 40 ohm If a source of unknown emf E is balanced by 40 cm length of the potentiometer wire the value of E is R 400 2V H A ww 40 cm C 1 E Only one option is correct B 0 8 V