CBSE 2026 · Region 1 · Set 3 · Q5 · 1 mark

The electric potential for various points in $\displaystyle x$-y plane is given by $\displaystyle \mathrm{V}=1.0 x^{2}$ $\displaystyle -2.0 \mathrm{y}^{2}$, where V is in volts and $\displaystyle x$, y are in metres. The angle that the electric field at point ($\displaystyle 2.0$ m, $\displaystyle 1.0$ m) makes with the positive $\displaystyle x$-axis 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.