CBSE 2025 · Region 1 · Set 3 · Q2 · 1 mark
Two conductors A and B of the same material have their lengths in the ratio $\displaystyle 1: 2$ and radii in the ratio $\displaystyle 2: 3$. If they are connected in parallel across a battery, the ratio $\displaystyle \frac{v_{\mathrm{A}}}{v_{\mathrm{B}}}$ of the drift velocities of electrons in them will be-
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Current ElectricityDrift of Electrons and the Origin of ResistivityApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.