Question

A sphere of radius 100cm has a charge of (2*3.14/3).its surface density of charge is

Answer 1

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Radius = r = 100cm

Charge = q = 2*3.14/3 C

Surface area = 4πr² = 4×3.14×100²

                      = 125600 m²

We know that,

Surface Charge Density = Charge/Surface area

                                        = 2×3.14/3 * 1/125600

                                        = 0.000017 C/m²