1 ampere current is given by?
One ampere represents a flow of one coulomb of electrical charge per second. Divide 1 coulomb by the charge of a single electron to get the number of electrons in a coulomb of charge. An electron has a charge of 1.60 x 10^-19 coulombs, so it takes 6.25 x 10^18 electrons to make up 1 coulomb of charge.