2 A potentiometer using cell C of emf 5V and internal

Last updated: 6/24/2023

2 A potentiometer using cell C of emf 5V and internal resistance 0 2 ohms is connected to a wire AB in the figure below A standard cell CO of a constant emf of 1 10 V gives a balance point at 55 cm of the wire When CO is replaced by a cell of emf E the balance point is obtained at 85 cm What is the value of E O a 1 4 V O b 1 5 V O c 1 7 V O d 1 9 V