ElectrostaticsMedium
Question
For a spherically symmetrical charge distribution, electric field at a distance r form the centre of sphere is 
= kr7
, where k is a constant. What will be the volume charge density at a distance r from the centre of sphere ?
= kr7, where k is a constant. What will be the volume charge density at a distance r from the centre of sphere ? Options
A.ρ = 9kε0r6
B.ρ = 5kε0r3
C.ρ = 3kε0r4
D.ρ = 9kε0r0
Solution
By using Gauss law
⇒ (E) (4πr2) = 
(Note : Check dimensionally thatρ ∝ r6)
(kr7)(4πr6) =
⇒ kε0r9 = ∫ ρr2dCreate a free account to view solution
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