Elementary Charge

**Semantic type:** Quantitative Concept

**Definition:** A fundamental physical constant equal to the scalar value of positive electric charge carried by a single proton or equivalently, the negative charge carried by a single electron. It is used as a unit of electric charge in the system of atomic units. Elementary charge has a value of 1.602 176 487x10E-19 C in the SI system.

**Synonyms:** - [e] - [e] - e - elementary charge - elementary charge