Answer:
Explanation:
Volume charge density ρ = charge / volume
= Q / (4/3 πR³)
total charge is located inside a radius R/2
= volume charge density x volume of sphere of radius R/2
= [Q / (4/3 πR³) ] x 4/3 π(R/2)³
= [Q / (4/3 πR³) ] x 4/3 πR³ x 1/8
= Q / 8
required fraction
= 1/8 .
