Which unit is used to measure the quantity of electrons passing a given point?

The quantity of electrons passing a given point in a circuit is measured in Coulombs. A Coulomb is defined as the amount of electric charge carried by a current of one ampere flowing for one second. This means that if you have a current of one ampere, one Coulomb of charge will pass through a point in the circuit every second.

In the context of electricity, this measurement is critical as it directly relates to the flow of electric charge, which consists of electrons. Understanding this relationship helps to quantify not just the flow of electrons but also how they contribute to the overall current in an electrical system.

In contrast, Volts measure electric potential difference, Ohms measure resistance, and Amperes quantify the flow rate of electric current itself, emphasizing the importance of current flow rather than the total charge passing.