The length of potentiometer wire is 1 m and its resistance

Last updated: 6/12/2023

The length of potentiometer wire is 1 m and its resistance is 40 A current of 5 mA is flowing in it An unknown source of emf is balanced on 40 cm length of this wire The emf of the source is 05mV 06 mV O 12 mV 08 mV