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  • Figures (a) and (b) show a circuit used in an experiment to determine the e. m. f. and internal resistance of the battery C. A graph was plotted of the potential difference V between the termi

Figures (a) and (b) show a circuit used in an experiment to determine the e. m. f. and internal resistance of the battery C. A graph was plotted of the potential difference V between the terminals of the battery against the current, which was varied by adjusting the rheostat. The graph is shown in Figure(b); x and y are the intercepts of the graph with the axes as shown. What is the internal resistance of the battery?

Option: 1

x


Option: 2

y


Option: 3

\mathrm{\frac{x}{y}}


Option: 4

\mathrm{\frac{y}{x}}


Answers (1)

best_answer

As \mathrm{V=\varepsilon-I r}
From graph it is clear that slope = \mathrm{-r=\frac{-y }{x}}
Or \mathrm{r=\frac{y }{x}}

Posted by

Divya Prakash Singh

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