A student measures the terminal potential difference (V) of a cell (of emf 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:
- r and
r and -
- and r
and - r
The terminal potential difference (V) of a cell is given as
V= - Ir ----------(1)
compare with straight-line equation y=mx+c
Slope =-r, Intercept =