Question
Asked Oct 24, 2019

What will be the velocity of an electromagnetic wave in free space? 

check_circleExpert Solution
Step 1

Maxwell equation is used to calculate velocity of electromagnetic wave in free space,

V.E = 0. 1)
V.B=0(2)
дв
..(3)
VxE =
VxH
в д6,Е
Vx-
аE
(4)
VxB = ,8
D electric field density
B magnetic field density
E = electric field intensity
H magnetic field intensity
, =permittivity of free space
4=pemeability of free space
help_outline

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V.E = 0. 1) V.B=0(2) дв ..(3) VxE = VxH в д6,Е Vx- аE (4) VxB = ,8 D electric field density B magnetic field density E = electric field intensity H magnetic field intensity , =permittivity of free space 4=pemeability of free space

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Step 2

Equation of electric field is calculated as,

ав
V xE =
-
дв
Vx(Vx E) Vx
a
V(V.E)-VE=(VxB)
ДЕ
vE
vE = 4,8.
(5)
help_outline

Image Transcriptionclose

ав V xE = - дв Vx(Vx E) Vx a V(V.E)-VE=(VxB) ДЕ vE vE = 4,8. (5)

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Step 3

Equation of magnetic field...

ДE
УxВ%3D н,6,
Уx (VxB)- д,8. (YxE)
дв
(V-B)-v'в - д, 6,
в
(6)
v'B= μδ ,
help_outline

Image Transcriptionclose

ДE УxВ%3D н,6, Уx (VxB)- д,8. (YxE) дв (V-B)-v'в - д, 6, в (6) v'B= μδ ,

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