A student measures the terminal potential difference \( (V) \) of a cell (of emf \( E \) and int...

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A student measures the terminal potential difference \( (V) \) of a cell (of emf \( E \) 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 [CBSE PMT 2009]
(a) \( E \) and \( -r \)
(b) \( -r \) and \( E \)
(c) \( r \) and \( -E \)
(d) \( -E \) and \( r \)
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