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Physics · 2025 · 1 mark
CBSE 2025 · Region 6 · Set 2 · Q3
A straight conductor is carrying a current of 2 A in +x direction along it. A uniform magnetic field B =(0.6 j +0.8 k ) T is switched on, in the…
A straight conductor is carrying a current of $\displaystyle 2$ A in +x direction along it. A uniform magnetic field $\displaystyle \overrightarrow{\mathrm{B}}=(0.6 \hat{\mathrm{j}}+0.8 \hat{\mathrm{k}}) \mathrm{T}$ is switched on, in the region. The force acting on $\displaystyle 10$ cm length of the conductor is:
Official answer
(B)
$\displaystyle (-0 \cdot 16 \hat{\mathrm{j}}+0 \cdot 12 \hat{\mathrm{k}}) \mathrm{N}$
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CBSE Class 12 Physics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.