Correct Answer - Option 1 : Uniform
CONCEPT:
Linear charge density:
- It is defined as the quantity of charge per unit length.
- Its SI unit is C/m.
- If ΔQ charge is contained in the line element Δl, the linear charge density λ will be,
\(\Rightarrow \lambda=\frac{\Delta Q}{\Delta l}\)
Surface charge density:
- It is defined as the quantity of charge per unit area.
- Its SI unit is C/m2.
- If ΔQ charge is contained in the elemental area Δs, the surface charge density σ will be,
\(\Rightarrow \sigma=\frac{\Delta Q}{\Delta s}\)
Volume charge density:
- It is defined as the quantity of charge per unit volume.
- Its SI unit is C/m3.
- If ΔQ charge is contained in the elemental volume Δv, the volume charge density ρ will be,
\(\Rightarrow \rho=\frac{\Delta Q}{\Delta v}\)
EXPLANATION:
- We know that the charge given to a metallic body always distributed uniformly over the surface of the metallic body because the charge can flow in a metallic body.
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So the surface charge density of a metallic body will always be uniform. Hence, option 1 is correct.
