Electric Volume Charge Density

Electric Charge Density The symbol in Equation [1] is the electric volume charge density: [Equation 1] The greek symbol pho () typically denotes electric charge, and the subscript V indicates it is the volume charge density. Since charge is measured in Coulombs [C], and volume is in meters^3 [m^3], the units of the electric charge density of Equation [1] are [C/m^3]. Note that since electric charge can be negative or positive, the charge density can be negative, positive or zero. Simple Charge Density Example Suppose we have +5 [C] of electric charge uniformly (evenly) spread within a sphere of radius 2 meters. What is the electric volume charge density in the sphere? The solution is simple: [Equation 2] The electric charge is known as a source in Maxwell's Equations, as it gives rise to Electric and Magnetic Fields. Maxwell's Equations This page on the volume charge electric density is copyrighted, particularly the application to Maxwell's Equations. No portion can be reproduced except by permission of Peter Bevelacqua. The copyright belongs to Maxwells-Equations.com, 2012.