CBSE 2024 · Region 1 · Set 1 · Q5 · 1 mark
A $\displaystyle 10$ cm long wire lies along y -axis. It carries a current of $\displaystyle 1.0$ A in positive y-direction. A magnetic field $\displaystyle \overrightarrow{\mathrm{B}}=(5 \mathrm{mT}) \hat{\mathrm{j}}-(8 \mathrm{mT}) \hat{\mathrm{k}}$ exists in the region. The force on the wire is :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle -(0.8 \mathrm{mN}) \hat{\mathrm{i}}$
Moving Charges and MagnetismMagnetic ForceApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.