A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of magnetic intensity is 4.5 x 10-2 Am^-1 at a point, what will be the appr…

Question

A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of magnetic intensity is 4.5 x 10-2

A m^{- 1}

at a point, what will be the approximate magnitude of electric field intensity at that point?
(Given: permeability of free space

μ_{0} = 4 π \times 1 0^{- 7} N A^{- 2}

, speed of light in vacuum c = 3 x 108

m s^{- 1}

)

Accepted Answer

Correct answer: C. (c) _r=1.61 ∈_r=6.44 B=4.5 10^-2 E = ? C= 1 _0 ∈_0V= 1 ∈ CV= _r ∈_r= 1.61 6.44 EB=V= 3 10^8 1.61 6.44=9.32 10^7m/s E=4.5 10^-2 9.32 10^7 =4.2 10^6

Solution

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