A sphere of radius 0.05m carries a charge of 1C while another
sphere of radius 0.1m carries charge of 10uc. The ratio of the
surface charge density of the two spheres is
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Explanation:
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A sphere of radius 0.05m carries a charge of 1C while another sphere of radius 0.1m carries a charge of 10C. The ratio of the surface charge density of the two spheres is 33.3/83.3
Explanation:
- The surface charge density (σ) is the charge (q) in the unit area (A), that is,
σ=
- For a sphere of radius (r) the surface area is given by
From the question, we have
the total charge present in the first sphere
the radius of that sphere
the surface area of the first sphere
the corresponding surface charge density is
σ=
the total charge present in the second sphere
the radius of that sphere
the surface area of the first sphere
the corresponding surface charge density is
σ=
therefore the ratio of surface charge densities
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