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Physics · 2023 · 1 mark
CBSE 2023 · Region 3 · Set 2 · Q13
The emf and internal resistance of a cell are E and r respectively. It is connected across an external resistance R =2 r. The potential drop across…
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
(C)
$\displaystyle \frac{2}{3} \mathrm{E}$
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