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Physics · 2020
JEE Main · 7 January 2020, Shift 1 · Q15
If the magnetic field in a plane electromagnetic wave is given by B =3 × 10^-8 sin (1.6 × 10^3 x+48 × 10^10 t ) j T, then what will be expression for…
If the magnetic field in a plane electromagnetic wave is given by
$$\overrightarrow{\mathrm{B}}=3 \times 10^{-8} \sin \left(1.6 \times 10^3 x+48 \times 10^{10} \mathrm{t}\right) \hat{j} \mathrm{~T},
$$
then what will be expression for electric field ?
Official answer
(2)
$\displaystyle \overrightarrow{\mathrm{E}}=\left(9 \sin \left(1.6 \times 10^3 x+48 \times 10^{10} \mathrm{t}\right) \hat{\mathrm{k}} \mathrm{~V} / \mathrm{m}\right)$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.