Thus, if a body contains n1 electrons and n2 protons, the total amount
of charge on the body is n2 × e + n1 × (–e) = (n2 – n1) e Since n1 and n2
are integers, their difference is also an integer Thus the charge on any
body is always an integral multiple of e and can be increased or
decreased also in steps of e The step size e is, however, very small because at the macroscopic
level, we deal with charges of a few mC