Question:
In the potentiometer arrangements shown the driving cell D
Last updated: 6/24/2023
![In the potentiometer arrangements shown the driving cell D](https://media.kunduz.com/media/sug-question-candidate/20211008151314503824-2497626.jpg?h=512)
In the potentiometer arrangements shown the driving cell D has emfE and internal resistance r The cell C whose emfis to be measure has emfE 2 and internal resistance 2r The potentiometer wire is 100 cm long If balance is obtained the length AJ 7 D G M 1 2 A 50cm B 50 cm C Balance will be obtained only if resistance of AB is r B