In terms of electricity, what does a coulomb measure?

A coulomb measures electrical charge, representing the quantity of electricity carried in a circuit. Specifically, one coulomb is defined as the amount of electric charge transferred by a constant current of one ampere in one second. This fundamental unit allows us to quantify how much charge is involved in electrical processes, which is crucial in understanding circuit behaviors and designs.

In contrast, voltage is a measure of electric potential difference, current measures the flow of electric charge, and power refers to the rate at which energy is transferred or converted. Therefore, choosing charge as the definition of a coulomb accurately reflects its role in measuring the fundamental properties of electricity. Understanding coulombs helps in calculating and analyzing various electrical formulas and applications.