CBSE 2026 · Region 1 · Set 2 · Q9 · 1 mark

A straight conductor lies along $\displaystyle x$-axis. It carries a current of $\displaystyle 10$ A along $\displaystyle +x$ direction. The magnetic field $\displaystyle \overrightarrow{\mathrm{B}}$ due to $\displaystyle 1$ cm segment of this conductor, centred at the origin, at a point ($\displaystyle 0$, $\displaystyle 1$ m, $\displaystyle 0$) 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.