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In the figure a long uniform potentiometer wire AB is having a constant potential gradient along its length. The null points for the two primary cells of emfs E 1 and E 2 connected in the manner shown are obtained at a distance of 120 em and 300 em from the end A. Find (i) E 1 /E 2 and (ii) position of null point for the cell E 1 . How is the sensitivity of a potentiometer increased ?

In the figure a long uniform potentiometer wire AB is having a constant potential gradient along its length. The null points for the two primary cells of emfs E 1 and E 2 connected in the manner shown are obtained at a distance of 120 em and 300 em from the end A. Find (i) E 1 /E 2 and (ii) position of null point for the cell E 1 . How is the sensitivity of a potentiometer increased ?

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Dear student

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