Единицы электромагнитных величин в системе СИ

76
533

 

Наименование величины

Наименование единицы

Выражение через единицы СИ

Обозначение единицы

русское

международное

Электрические величины

Сила
электрического тока

ампер

А

А

А

Количество электричества, заряд

кулон

Ас = Кл

Кл

С

Электрический потенциал, напряжение, ЭДС

вольт

кг-м2/(А-с3) = В

В

V

Напряженность электрического поля

вольт на метр

кг -м /(А -С3) = = В/м

В/м

V/m

Абсолютная
диэлектрическая
проницаемость

фарад на метр

А2-с4/(кгм3)

Ф/м

F/m

Электрический момент диполя

кулон-метр

А-с-м = Кл-м

Кл-м

C-m

Электрическое смещение

купон на кв. метр

Ас/м2=Кл/м2

Кл/м2

C/m2

Поляризованность

кулон на кв. метр

А-с/м2=Кл/м2

Кл/м2

C/m2

Электрическая емкость

фарад

А2-с4/(кг-м2) = = с/Ом

Ф

F

Плотность тока

амперна кв. метр

А/м2

А/м2

A/m2

Электрическое со­противление

ом

кг м2/А3 -с3) = В/А

Ом

n

Электрическая проводимость

сименс

А2с3/(кг-м2) = я 1/Ом

См

s

Удельное
электрическое
сопротивление

ом-метр

кг-м3/(А2с3) = — Ом-м

Ом-м

ft-m

Удельная электрическая проводимость

сименс на метр

А2-с3/(кг-м2) = = 1/Ом-м

См/м

S/m

Полная мощность
Активная мощность

вольт-ампер ватт

kmiAc3

В-А Вт

VA Wt

Реактивная мощность

вар

кг-кг’/с3

вар

 

Магнитныв величины

Магнитный поток

вебер

кгм2/(А-с2) = = В-с

Вб

Wb

Магнитная индукция

тесла

кг/(Ас2) = = Вс/м2

Тл

T

Абсолютная магнитная прони­цаемость

генри на метр

кг -м/(А2-с2)

Гн/м

Н/т

Магнитный момент электрического тока, магнитный момент диполя

ампер-кв. метр

А-м2

А-м2

А-т2

Намагниченность

ампер на метр

А/м

А/М

А/т

Напряженность магнитного поля

ампер на метр

А/м

А/м

А/т

Индуктивность, взаимная индук­тивность

генри

кг-м2/(А2 с2) = = B-cVA = B6VA = >Ом-С

Гн

Н

Магнитодвижущая сила, разность скалярных магнит­ных потенциалов

ампер

А

А

А

Магнитное сопротивление

ампер на вебер

с2А2/(м2 кг) = = А/Вб=1/Гн

А/Вб

A/Wb

Магнитная проводимость

вебер на ампер

м2кг/(с2А2) = Гн

Вб/А

Wb/A

Векторный маг­нитный потенциал

вебер на метр

кгмДАс2)^ = Вс/м

Вб/м

Wb/m

 

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