en: Whereas '' e `` the electric charge of the particle and A is the magnetic vector potential of the electromagnetic field . Where `` e '' is the electric charge of the particle and A the magnetic vector potential of the electromagnetic field .
ms: Manakala ''e `cas elektrik bagi zarah dan A ialah potensi vektor magnet bagi medan elektromagnet. Di mana "e"' adalah cas elektrik bagi zarah dan A potensi vektor magnet bagi medan elektromagnet.