The charge on an electron is very small, and it is not convenient to take it as the unit of charge. Therefore, coulomb2 is used as the unit of charge in practice. Hence, the practical unit of charge is coulomb.
1 coulomb = charge on 628 × 1016 electrons
If a body is said to have a negative charge of one coulomb, then it means that the body has an excess of 628 × 1016 electrons from its normal due share.
Leave a Reply