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Electromagnetic theory miscellaneous

Electromagnetic Theory

  1. Given that—
    E = time and space dependent electric field intensity vector
    µ = permeability of the medium
    σ = conductivity of the medium
    ε = permittivity of the medium
    The electromagnetic wave equation is—
    1. ∇2E−μσ
      ∂E
      −με
      ∂2E
      = 0
      ∂t∂t2
    2. ∇2E−με
      ∂E
      −μσ
      ∂2E
      = 0
      ∂t∂t2
    3. ∇2E−σε
      ∂E
      −μσ
      ∂2E
      = 0
      ∂t∂t2
    4. ∇2E−
      ∂
      ∂E
      −
      μ
      ∂2E
      = 0
      μ∂tε∂t2

Correct Option: A

∇2E−μσ
∂E
−με
∂2E
= 0
∂t∂t2



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