charge    SI  unit coulomb (symbol C). A property possessed by the  elementary particles by virtue of which they show a host of phenomena  known  as  electrical.  The electron for example, by convention possesses negative charge that is 1.602´ 10^-19 C. The charge  of  proton is equal and opposite to that of electron. An atom  possesses equal number of electrons and protons. Therefore all bulk matter is electrically neutral. However if there are an excess  or deficiency of electrons, the bulk matter becomes charged. Therefore  charge  can  always  be in multiple of the basic unit, which is the charge of an electron.

A  static  charge  possesses  a  field around it, called the electrostatic field. A moving charge possesses an electromagnetic field. Any  two stationery charges exert a force on one another given by the Coulomb's Law.*