CBSE 2023 · Region 3 · Set 2 · Q13 · 1 mark
The emf and internal resistance of a cell are E and r respectively. It is connected across an external resistance $\displaystyle \mathrm{R}=2 \mathrm{r}$. The potential drop across the terminals of the cell will be :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \frac{2}{3} \mathrm{E}$
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