Electromagnetic interaction thumb|right|Lepton–photon interaction One of the most prominent properties of leptons is their electric charge, . The electric charge determines the strength of their electromagnetic interactions. It determines the strength of the electric field generated by the particle (see Coulomb's law) and how strongly the particle reacts to an external electric or magnetic field (see Lorentz force). Each generation contains one lepton with and one lepton with zero electric charge. The lepton with electric charge is commonly simply referred to as a charged lepton while a neutral lepton is called a neutrino. For example, the first generation consists of the electron with a negative electric charge and the electrically neutral electron neutrino .
Electromagnetic interaction thumb|right|Lepton–photon interaction One of the most prominent properties of leptons is their electric charge, . The electric charge determines the strength of their electromagnetic interactions. It determines the strength of the electric field generated by the particle (see Coulomb's law) and how strongly the particle reacts to an external electric or magnetic field (see Lorentz force). Each generation contains one lepton with and one lepton with zero electric charge. The lepton with electric charge is commonly simply referred to as a charged lepton while a neutral lepton is called a neutrino. For example, the first generation consists of the electron with a negative electric charge and the electrically neutral electron neutrino .