ElectrostaticsHard
Question
An insulating solid sphere of radius ′R′ is charged in a non-uniform manner such that volume charge density ρ = 
, where A is a positive constant and r the distance from centre. Electric field strength at any inside point at distance r1 is :
, where A is a positive constant and r the distance from centre. Electric field strength at any inside point at distance r1 is :Options
A.
B.
C.
D.
Solution
Charge enclosed by sphere of radius r1
q = ∫ ρ4πr2 dr =
4πr2dr = 
Required electric field =
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