Physics · 2019
JEE Main · 9 January 2019, Shift 2 · Q22
The energy associated with electric field is ( U_E ) and with magnetic field is ( U_B ) for an electromagnetic wave in free space. Then:
The energy associated with electric field is $\displaystyle \left(\mathrm{U}_{\mathrm{E}}\right)$ and with magnetic field is $\displaystyle \left(\mathrm{U}_{\mathrm{B}}\right)$ for an electromagnetic wave in free space. Then:
Official answer
(3)
$\displaystyle U_E=U_B$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.