Question

unit of surface charge density is ??? objective

Answer 1

answer : Coulomb/metre² or C/m²

explanation : surface charge density is the amount of charge present on the surface of conductor per unit area. or, it is the ratio of charge to surface area of conductor.

e.g., $\sigma=\frac{Q}{A}$

we know, unit of charge is “coulomb” whereas unit of surface area is “ metre² ”

so, unit of surface charge density is coulomb/metre² or C/m² .

[note : there are three ways to find charge density , linear charge density, surface charge density and volume charge density ]

Answer 2

Answer:

Coulomb per squared meter, $\rm C/m^2$.

Explanation:

The surface charge density of a body is defined as the amount of charge present on the unit surface area of that body.

$\sigma = \dfrac QA$

where,

• $\sigma$ = surface charge density.

• $Q$ = total charge on the surface of the body.

• $A$ = total surface area of the body.

The unit of charge is Coulomb, $\rm C$ and the unit of surface area is $\rm m^2$.

Thus, the unit of surface charge density is $\rm C/m^2$.