JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Understanding +4 | -1

A student measures the terminal potential difference

\left( V \right)

of a cell (of

emf\mathrm{ }E

and internal resistance

r

) as a function of the current

\left( I \right)

flowing through it. The slope, and intercept, of the graph between

V

and

I

, then, respectively, equal

View answer and explanation

Correct option: B

- r

and

E

Option B (

- r

and

E

) is correct because the equation V = E - Ir represents a straight line with slope -r and y-intercept E.

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