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Area Electromagnetism / Electromagnetic concepts and quantities

IEV ref121-11-03

Symbol
ε0

en
electric constant
permittivity of vacuum
scalar constant ε0 linking the electric quantities and the mechanical quantities, obtained from the relation

F= 1 4π ε 0 | Q 1 Q 2 | r 2 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAeacqGH9aqpdaWcaaqaaiaaigdaaeaacaaI0aacdaGae8hWdaNaeqyTdu2aaSbaaSqaaiaab+gaaeqaaaaakiabgwSixpaalaaabaWaaqWaaeaacaWGrbWaaSbaaSqaaiaaigdaaeqaaOGaamyuamaaBaaaleaacaaIYaaabeaaaOGaay5bSlaawIa7aaqaaiaadkhadaahaaWcbeqaaiaaikdaaaaaaaaa@4827@

based on the Coulomb law in vacuum, where F is the magnitude of the force between two particles with electric charges Q1 and Q2 respectively, placed at a distance r apart

Note 1 – In vacuum, the product of the electric constant and the electric field strength E is equal to the electric flux density D:

D = ε0E

Note 2 – The electric constant is related to the magnetic constant μ0 and to the speed of light in vacuum c0 by the relation

ε0μ0c02 = 1

Note 3 – The value of the electric constant is exactly equal to

10 7 4π×299 792  458 2 m -3 kg -1 s 4 A 2 =8,854 187 817  pF /m MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaaGymaiaaicdadaahaaWcbeqaaiaaiEdaaaaakeaacaaI0aacdaGae8hWdaNaey41aqRaaGOmaiaaiMdacaaI5aGaaeiiaiaaiEdacaaI5aGaaGOmaiab=bcaGiaaisdacaaI1aGaaGioamaaCaaaleqabaGaaGOmaaaaaaGccaqGTbWaaWbaaSqabeaajugqbiaac2cacaaMi8+ccaaIZaaaaOGaam4AaiaadEgadaahaaWcbeqaaKqzafGaaiylaiaayIW7liaaigdaaaGccaWGZbWaaWbaaSqabeaacaaI0aaaaOGaamyqamaaCaaaleqabaGaaGOmaaaakiabg2da9iaaiIdacaGGSaGaaGioaiaaiwdacaaI0aGaaeiiaiaaigdacaaI4aGaaG4naiaabccacaaI4aGaaGymaiaaiEdacqGHMacVdaWcgaqaaiaabchacaqGgbaabaGaaeyBaaaaaaa@6299@


[SOURCE: 705‑03‑01 MOD]


fr
constante électrique, f
permittivité du vide, f
constante scalaire ε0 reliant les grandeurs électriques et les grandeurs mécaniques, obtenue d'après la relation

F= 1 4π ε 0 | Q 1 Q 2 | r 2 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAeacqGH9aqpdaWcaaqaaiaaigdaaeaacaaI0aacdaGae8hWdaNaeqyTdu2aaSbaaSqaaiaab+gaaeqaaaaakiabgwSixpaalaaabaWaaqWaaeaacaWGrbWaaSbaaSqaaiaaigdaaeqaaOGaamyuamaaBaaaleaacaaIYaaabeaaaOGaay5bSlaawIa7aaqaaiaadkhadaahaaWcbeqaaiaaikdaaaaaaaaa@4827@

fondée sur la loi de Coulomb dans le vide, où F est la norme de la force s'exerçant entre deux particules de charges électriques Q1 et Q2 respectivement, placées à une distance r l'une de l'autre

Note 1 – Dans le vide, le produit de la constante électrique par le champ électrique E est égal à l'induction électrique D:

D = ε0E

Note 2 – La constante électrique est liée à la constante magnétique μ0 et à la vitesse de la lumière dans le vide c0 par la relation

ε0μ0c02 = 1

Note 3 – La valeur de la constante électrique est exactement égale à

10 7 4π×299 792  458 2 m -3 kg -1 s 4 A 2 =8,854 187 817  pF /m MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaaGymaiaaicdadaahaaWcbeqaaiaaiEdaaaaakeaacaaI0aacdaGae8hWdaNaey41aqRaaGOmaiaaiMdacaaI5aGaaeiiaiaaiEdacaaI5aGaaGOmaiab=bcaGiaaisdacaaI1aGaaGioamaaCaaaleqabaGaaGOmaaaaaaGccaqGTbWaaWbaaSqabeaajugqbiaac2cacaaMi8+ccaaIZaaaaOGaam4AaiaadEgadaahaaWcbeqaaKqzafGaaiylaiaayIW7liaaigdaaaGccaWGZbWaaWbaaSqabeaacaaI0aaaaOGaamyqamaaCaaaleqabaGaaGOmaaaakiabg2da9iaaiIdacaGGSaGaaGioaiaaiwdacaaI0aGaaeiiaiaaigdacaaI4aGaaG4naiaabccacaaI4aGaaGymaiaaiEdacqGHMacVdaWcgaqaaiaabchacaqGgbaabaGaaeyBaaaaaaa@6299@


[SOURCE: 705‑03‑01 MOD]


ar
ثابت كهربائي

de
elektrische Feldkonstante, f

es
constante dieléctrica
permitividad del vacío

fi
sähkövakio
tyhjiön permittiivisyys

it
costante elettrica
permettività del vuoto

ja
真空誘導率
ε0, (記号)

no
nb elektrisk konstant

nn elektrisk konstant

pl
stała elektryczna
przenikalność elektryczna próżni

pt
constante eléctrica
permitividade do vazio

ru
электрическая постоянная
диэлектрическая проницаемость вакуума

sv
elektriska konstanten
permittiviteten för vakuum

Publication date: 1998-08
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