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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The variation of potential difference V with length l in case of two potentiometers X and Y is as shows in Fig. 6.21. Which of these two will you perfer for comparing the emfs of the two cells and why ?

The variation of potential difference V with length l in case of two potentiometers X and Y is as shows in Fig. 6.21. Which of these two will you perfer for comparing the emfs of the two cells and why ?

In the circuit shown below the key is pressed at time t = 0. Which of the following statements is are true ?