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MCQEasyJEE Main 2023 · 6 April, Shift 2Characteristics of EM Waves

Physics Question from JEE Main 2023 · 6 April, Shift 2

The energy density associated with electric field EE and magnetic field BB of an electromagnetic wave in free space is given by ϵ0\epsilon_0 - permittivity of free space, μ0\mu_0 - permeability of free space:

  • A

    UE=ϵ0E22,  UB=B22μ0U_E = \frac{\epsilon_0 E^2}{2},\; U_B = \frac{B^2}{2\mu_0}

  • B

    UE=E22ϵ0,  UB=μ0B22U_E = \frac{E^2}{2 \epsilon_0},\; U_B = \frac{\mu_0 B^2}{2}

  • C

    UE=E22ϵ0,  UB=B22μ0U_E = \frac{E^2}{2 \epsilon_0},\; U_B = \frac{B^2}{2\mu_0}

  • D

    UE=ϵ0E22,  UB=μ0B22U_E = \epsilon_0 \frac{E^2}{2},\; U_B = \mu_0 \frac{B^2}{2}

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