Physics · 2024
JEE Main · 31 January 2024, Shift 1 · Q42
A rigid wire consists of a semicircular portion of radius R and two straight sections. The wire is partially immerged in a perpendicular magnetic…
A rigid wire consists of a semicircular portion of radius $\displaystyle R$ and two straight sections. The wire is partially immerged in a perpendicular magnetic field $\displaystyle B=B_0 \hat{j}$ as shown in figure. The magnetic force on the wire if it has a current $\displaystyle i$ is:
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle -2 i B R \hat{j}$
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JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.