Queries, comments, suggestions? Please contact us.



Area Electromagnetism / Electromagnetic concepts and quantities

IEV ref121-11-56

Symbol
H

en
magnetic field strength
magnetizing field strength
vector quantity obtained at a given point by subtracting the magnetization M from the magnetic flux density B divided by the magnetic constant μ0:

H= B μ 0 M MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaahIeacqGH9aqpda WcaaqaaiaahkeaaeaacqaH8oqBdaWgaaWcbaGaaGimaaqabaaaaOGa eyOeI0IaaCytaaaa@3C6A@

Note 1 – In vacuum, the magnetic field strength is at all points equal to the magnetic flux density divided by the magnetic constant:

H= B μ 0 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaahIeacqGH9aqpda WcaaqaaiaahkeaaeaacqaH8oqBdaWgaaWcbaGaaGimaaqabaaaaaaa @3A9D@

Note 2 – The rotation of the magnetic field strength is the total current density Jt:

rot H = Jt

Note 3 – The magnetic flux density B is sometimes called “magnetic field”, risking confusion with the magnetic field strength H.


fr
champ magnétique, m
excitation magnétique, f
grandeur vectorielle obtenue en un point donné en soustrayant l'aimantation M du quotient de l'induction magnétique B par la constante magnétique μ0:

H= B μ 0 M MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaahIeacqGH9aqpda WcaaqaaiaahkeaaeaacqaH8oqBdaWgaaWcbaGaaGimaaqabaaaaOGa eyOeI0IaaCytaaaa@3C6A@

Note 1 – Dans le vide le champ magnétique est en tout point égal au quotient de l'induction magnétique par la constante magnétique:

H= B μ 0 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaahIeacqGH9aqpda WcaaqaaiaahkeaaeaacqaH8oqBdaWgaaWcbaGaaGimaaqabaaaaaaa @3A9D@

Note 2 – Le rotationnel du champ magnétique est égal à la densité de courant total Jt:

rot H = Jt

Note 3 – L’induction magnétique B est parfois appelée "champ magnétique", ce qui peut entraîner une confusion avec le champ magnétique H.


ar
شدة مجال مغناطيسي

de
magnetische Feldstärke, f

es
intensidad de campo magnético

fi
magneettikentän voimakkuus

it
campo magnetico

ja
磁界強度

no
nb magnetisk feltstyrke

nn magnetisk feltstyrke

pl
natężenie pola magnetycznego

pt
campo magnético

ru
напряженность магнитного поля

sv
magnetiserande fältstyrka
magnetisk fältstyrka

Publication date: 1998-08
Copyright © IEC 2017. All Rights Reserved.