Physics · 2024
JEE Main · 4 April 2024, Shift 1 · Q44
The electric field in an electromagnetic wave is given by E = i 40 cos ω(t-z / c) NC^-1. The magnetic field induction of this wave is (in SI unit):
The electric field in an electromagnetic wave is given by $\displaystyle \overrightarrow{\mathrm{E}}=\hat{i} 40 \cos \omega(t-z / c) \mathrm{NC}^{-1}$. The magnetic field induction of this wave is (in SI unit) :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \overrightarrow{\mathrm{B}}=\hat{j} \frac{40}{\mathrm{c}} \cos \omega(\mathrm{t}-z / \mathrm{c})$
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JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.