Surface Charge Density is the amount of charge per unit of a two-dimensional surface area. It is a measure of how much quantity of electric charge is accumulated over a surface. It is expressed by the symbol σ and the unit in the SI system is Coulombs per square meter i.e Cm–2.
If q is the charge and A is the area of the surface, then the Surface Charge Density is given by; σ=qA,
In electromagnetism, it is expressed as the quantity of electric charge per unit volume of one, two, or even three-dimensional space.
The topic covers many numerical problems of charge and magnetism even.
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