A cell of e. m. f. E is connected across a resistance $r$. The potential difference between the term

Question

A cell of e. m. f. E is connected across a resistance $r$. The potential difference between the terminals of the cell is found to be $V$. The internal resistance of the cell must be\

Professor PC Thomas Classes · Answer

$V=\frac{E R}{R+r}$\ $R$ is external resistance. Here $R=r$\ $r$ is internal resistance Here $r=x$\ $	herefore \mathrm{V}=\frac{\mathrm{Er}}{\mathrm{r}+\mathrm{x}}$\ Get the value of $x$.\