A coulomb is defined as the total charge carried by a current of one Ampere over one second, leading to its unit being Amperes seconds rather than Amperes per second. The mathematical relationship I = dQ/dt shows that charge (Q) is the integral of current (I) over time (t), resulting in units of Amperes multiplied by seconds. This distinction emphasizes that a coulomb represents a total amount of charge, not a rate, similar to how energy is defined as power multiplied by time. Therefore, after two seconds, the total charge would be two coulombs. Understanding this difference clarifies the unit measurement of coulombs.
