Two wires of equal length and radii r and 2 r are connected in series. Their resistivities are 2 ρ and ρ respectively. For the same current passing…

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 :