Question

1. To measure the phase velocity in a medium, especially if it is not vacuum, is rather

difficult. Instead, it is proposed to proceed as follows:

1. Generate an electric field intensity in the medium with permeability μ and

permittivity ε at some arbitrary frequency assuming that this is a plane wave.

Assume a lossless medium. Measure the amplitude of the electric field intensity

E.

2. Measure the amplitude of the magnetic flux density B, produced by the electric

field intensity

Now that you have E and B

Calculate the phase velocity in the medium

Answer 1

Solved....

Ammer : We knows By Maxwell's Equasions JE 2B 11 and үх В = € at

o st (3) * -3,4- o [from maxwell's Equation] (3 x A) KA (3:) 4 A imon 7 X TP 3 rv ) é il weet 4 e (oxo) 2 ९ - => re -) X A (०९ (3 x A) * Now,

= 0 UE 8²E St² D²E 111 => [ue do A 24 12) E = 0 --C Magnitude of Magnetic flux density produced by Electic field intensil Et → Electric flux ME DE st intensity ) xa = ( x A) * A (3qxa year st ied (-) st ==ME E d²B IE2 -UE 82 Similarly ; (0.B) - 0².B st2 371 82B x2 P?B=0

(ти ? ( ме е v ) его лъ Calculate phase velocity affacing 8 (0) Eqr Vph . Juɛ 1 д€ = Tue Upw vph Гэм 6 да. - о vpk”, те — 1k i. Vph de t² PNE 8rE Uph = tv ЗАД Similarly calculate р. #m 21 (v