Q 12-08-171JEE MainJEE Main 2021 (27 Aug, Shift 1)Easy
If $E$ and $H$ represents the intensity of electric field and magnetizing field respectively, then the unit of $\frac{E}{H}$ will be:
Answer: (B) ohm
Unit of $E$: V m$^{-1}$; unit of $H$: A m$^{-1}$.
$\dfrac{E}{H}$ has unit $\dfrac{\text{V}}{\text{A}} = \Omega$ (ohm). (For a wave in vacuum this ratio is the impedance of free space, about $377\ \Omega$.)
Solution by Sreeraj P, M.Sc Physics