Question

A rubber ball with a radius of 10.0 cm is uniformly charged with a charge density of p . The electric field at position “X”, 5.00 cm from the center of the ball, is pointing toward the center of the sphere with a magnitude of 2 5.00 10^2 N/ C . What is the magnitude of the electric field 12.00 cm from the center of the sphere? Neglect any dielectric effect of the rubber

Answer 1

Electric field at distance from center , inside the  uniformly charged sphere of radius , and charge is

for

Electric field at distance from center , outside the uniformly charged sphere of radius  , and charge is

for

Given that, ,

  

Electric field at distance from the center of sphere is

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If

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