CBSE 2023 · Region 3 · Set 3 · Q4 · 1 mark

Two wires of equal length and radii $\displaystyle \mathbf{r}$ and $\displaystyle 2 \mathbf{r}$ are connected in series. Their resistivities are $\displaystyle 2 \rho$ and $\displaystyle \rho$ respectively. For the same current passing through the combination, the potential drop across their ends will be in the ratio of :

CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.