when dealing with macroscopic or large-scale charges, the discrete nature of individual charges becomes less relevant, and we can effectively treat charge as a continuous quantity. This is due to the large number of individual charges involved, and the statistical nature of their behavior.

The macroscopic scale typically involves a vast number of electrons and protons, and when dealing with such large numbers, the discrete nature of individual charges becomes less noticeable. Instead, we can use the concept of charge density, which is a continuous distribution of charge per unit volume or surface.

In the macroscopic world, when working with quantities like current, voltage, and capacitance in circuits or electric fields and potentials in electrostatics, the continuous approximation of charge is usually sufficient and provides accurate results. Quantum effects become more significant at microscopic scales, and their impact becomes negligible when dealing with macroscopic charges and electric phenomena.