CBSE 2025 · Region 1 · Set 1 · Q3 · 1 mark
A $\displaystyle 1$ cm segment of a wire lying along x -axis carries current of $\displaystyle 0.5$ A along +x direction. A magnetic field $\displaystyle \overrightarrow{\mathrm{B}}=(0.4 \mathrm{mT}) \hat{\mathrm{j}}+(0.6 \mathrm{mT}) \hat{\mathrm{k}}$ is switched on, in the region. The force acting on the segment is
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle (-3 \hat{\mathrm{j}}+2 \hat{\mathrm{k}}) \mu \mathrm{N}$
Moving Charges and MagnetismMagnetic ForceApplymcqmedium
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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.