Question: The volume charge density inside a solid sphere of radius a is = 0 r/a, where 0 is a constant. Find (a)

The volume charge density inside a solid sphere of radius a is ρ = ρ₀r/a, where ρ₀ is a constant. Find
(a) The total charge
(b) The electric field strength within the sphere, as a function of distance r from the center.

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