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

Question

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, help_outlineImage TranscriptioncloseV.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 fullscreen
Step 2

Equation of electric field is calculated as, help_outlineImage Transcriptioncloseав V xE = - дв Vx(Vx E) Vx a V(V.E)-VE=(VxB) ДЕ vE vE = 4,8. (5) fullscreen
Step 3

Equation of magnetic field... help_outlineImage TranscriptioncloseДE УxВ%3D н,6, Уx (VxB)- д,8. (YxE) дв (V-B)-v'в - д, 6, в (6) v'B= μδ , fullscreen

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### Electrical Engineering 