JEE Main 2019 — Electromagnetic Waves Question with Solution
From: JEE Main 2019 (Online) 9th January Evening Slot
Question
The energy associated with electric field is (UE) and with magnetic field is (UB) for an electromagnetic wave in free space. Then :
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Energy density of magnetic field (UB) =
Also,
Energy density of electric field
UE = 0E2
= 0 B2 C2 [as = C ]
= 0 B2 [as C2 = ]
=
UB = UE
Also,
Energy density of electric field
UE = 0E2
= 0 B2 C2 [as = C ]
= 0 B2 [as C2 = ]
=
UB = UE
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