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A student measures the terminal potential difference (V) of a cell (of emf \in and internal resistance r) as a function of the current (I) flowing through it. The slope, and intercept, of the graph between V and I, then, respectively, equal:

Option: 1

- r and \in


Option: 2

 r and - \in


Option: 3

- \in and r


Option: 4

\in and - r


Answers (1)

best_answer

The terminal potential difference (V) of a cell is given as

 V=\in - Ir            ----------(1)

compare with straight-line equation y=mx+c

Slope =-r, Intercept =\in

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