1.

Explain volume charge density. Write its unit.

Answer»

Volume charge density: When the charge density is throughout the volume of a body, then the charge per unit volume is called volume charge density and it is represented by ρ.
∴ ρ = \(\frac{q}{V}\)
Hence the unit of ρ is Cm-3
Example: If a charge q is uniformly distributed in the whole volume of a sphere of radius R, then \(\rho =\frac { q }{ \frac { 4 }{ 3 } \pi { R }^{ 3 } } =\frac { 3q }{ 4\pi { R }^{ 3 } } \)


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