# Electric Charge

Electric charge is a fundamental conserved property of some sub-atomic particles, which determines their electromagnetic interaction. An isolated electric charge creates an electric field around it and exerts force on all other charges within that field.

The SI unit of charge is coulomb (C). The charge on an electron is 1.602 Ã— 10-19 C. Thus, one coulomb charge is defined as the charge possessed by electrons.

 âˆ´ 1 coulomb charge = Charge of 6.24 Ã— 1018 electrons

The total electric charge of an isolated system remains constant regardless of changes within the system itself. This is known as the law of conservation of charge. The law of conservation of charge states that charge can neither be created nor destroyed. A charge can however be transferred from one body to another body.