Question

what is volume charge density?

Answer 1

In electromagnetism, charge density is a measure of the amount of electriccharge per unit length, surface area, orvolume. Volume charge density(symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C.

Answer 2

The volumetric charge density is like the volumetric mass density (often just called density), it is generally the total charge divided by the volume.