CBSE 2025 · Region 2 · Set 1 · Q3 · 1 mark
A $\displaystyle 1$ cm straight segment of a conductor carrying $\displaystyle 1$ A current in $\displaystyle x$ direction lies symmetrically at origin of Cartesian coordinate system. The magnetic field due to this segment at point ( $\displaystyle 1 \mathrm{~m}, 1 \mathrm{~m}, 0$ ) is
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \frac{5.0}{\sqrt{2}} \times 10^{-10} \hat{\mathrm{k}} \mathrm{T}$
Moving Charges and MagnetismMagnetic Field due to a Current Element, Biot-Savart LawApplymcqmedium
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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.