What is 1 coulomb?

A coulomb (symbol: C) is the SI unit of electric charge. It is defined as the quantity of charge transported in one second by a steady current of one ampere.

• Magnitude: Approximately 6.241509074 × 10¹⁸ elementary charges (like the charge of a single proton or the absolute value of the charge of an electron).
• Derivation: 1 C = 1 A ⋅ s (one ampere-second)
• Named after: Charles-Augustin de Coulomb, a French physicist.
• Practical Use: Coulombs are used to measure the amount of electric charge, such as the charge stored in a capacitor or the charge transferred in an electrical circuit.
• Relationship to other units: The coulomb is related to other electrical units, such as the volt (V) (energy per unit charge) and the farad (F) (capacitance).