CBSE 2026 · Region 1 · Set 2 · Q1 · 1 mark

In a region electric field is given by $\displaystyle \overrightarrow{\mathrm{E}}=4 x \hat{\mathrm{i}} \mathrm{N} / \mathrm{C}$. The potential difference between points $\displaystyle \mathrm{A}(x=1 \mathrm{~m})$ and $\displaystyle \mathrm{B}(x=3 \mathrm{~m}),\left(\mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}\right)$ is

CBSE Class 12 Physics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.