Manufar wutar lantarki

A fannin lantarki, adadin wutar lantarki da ke ratsa kowace sashe na mai jagora a kowane lokaci ana kiransa da ƙarfin lantarki, ko kuma kawai ƙarfin lantarki. Alamar wutar lantarki ita ce I, kuma naúrar ita ce ampere (A), ko kuma kawai "A" (André-Marie Ampère, 1775-1836, masanin kimiyyar lissafi kuma masanin kimiyyar sinadarai na Faransa, wanda ya yi manyan nasarori a nazarin tasirin lantarki kuma ya ba da gudummawa ga lissafi da kimiyyar lissafi. An sanya wa naúrar lantarki ta duniya, ampere, suna bayan sunan mahaifinsa).
[1] Motsin alkibla na yau da kullun na caji kyauta a cikin na'urar jagora ƙarƙashin aikin ƙarfin filin lantarki yana samar da wutar lantarki.
[2] A cikin wutar lantarki, an tsara cewa alkiblar kwararar jagora ta caji mai kyau ita ce alkiblar wutar lantarki. Bugu da ƙari, a cikin injiniyanci, alkiblar kwararar jagora ta caji mai kyau kuma ana amfani da ita azaman alkiblar wutar lantarki. Girman wutar lantarki ana bayyana shi ta hanyar cajin Q da ke gudana ta cikin sashin giciye na mai gudanarwa a kowane lokaci naúrar, wanda ake kira ƙarfin wutar lantarki.
[3] Akwai nau'ikan masu ɗaukar kaya da yawa a yanayi waɗanda ke ɗauke da cajin lantarki. Misali: electrons masu motsi a cikin masu gudanar da aiki, ions a cikin electrolytes, electrons da ions a cikin plasma, da quarks a cikin hadrons. Motsin waɗannan masu ɗaukar kaya yana samar da wutar lantarki.