The electric charge is measured in Coulombs. 1 Coulomb is defined as "the charge of approximately 6.241×10^18 electrons" by wikipedia. When I look up the charge of one electron, I get: 1.60217657 × 10^-19 coulombs I'm confused by the fact that electronic charge is defined in terms of coulombs and not in terms of Newtons. It seems more logical to me that the charge of 1 electron should be defined in terms of Newtons, not coulombs, because charge is a physical property that expresses itself solely in the fact that it causes other charged matter to experience a force when in its vicinity (isn't it?) and Newton is the unit of force, so why isn't it defined in terms of newtons? Mass is a physical property that expresses itself in the fact that it causes matter to resist a change in acceleration when it experiences a force, so it is very logically defined in terms of F/a, unlike with charge. My exams are nearing, so this is very important to me, thank you!