ChargeThe charge on any body can be expressed as an integral multiple of basic unit of charge, i.e. charge on one electron. This phenomena is called quantisation of electric charge. It can be written as [q=±ne] ,where, n=1, 2, 3, … is any integer, positive or negative and e is the basic unit of charge. The SI unit of charge is called coulomb and denoted by C and its value is e = 1.602192 x 10^-19C or 1.6 x 10^-19 C.