Question

Calculate the electric field intensity at a point just near the surface of a charged plane sheet, measured from its mid-point.

[σ = 8.85 μ C/m²]

Answer 1

Given:

Surface charge density, σ = 8.85 × 10⁻⁶ C/m²

Permittivity of free space, ε₀ = 8.85 × 10⁻¹² C²N⁻¹m⁻²

`E = sigma/(2 epsilon_0)`

`E = sigma/(2 xx (8.85 xx 10^-12)`

`E = (8.85 xx 10^-6)/(2 xx 8.85 xx 10^-12)`

`E = (8.85 xx 10^-6)/(1.77 xx 10^-11)`

E = 5 × 10⁵ N/C