Understanding the Coulomb: The Fundamental Unit of Electric Charge

Let's start with the basics - a coulomb (C) measures electric charge, similar to how kilograms measure mass. The International System of Units defines it through current and time: 1 coulomb equals 1 ampere flowing for 1 second (1 C = 1 A·s). But what does this actually mean in practical terms? [2022-10-06 17:00]