A sold sphere having a radius 
and uniform charge density 
has a radius 
as shown in the figure. Find the ratio of the magnitude of electric field at point 
and 
Text Solution
Verified by ExpertsC
For solid sphere,
Field inside sphere, 
& Field outside sphere, 
where, 
is distance from centre and 
is radius of sphere
Electric field at A due to sphere of radius 
(sphere 1 ) is zero and therefore, net electric field will be because of sphere of radius 
(sphere 2 ) having charge density 
Similarly, Electric field at point 
Electric Field Due to solid sphere of radius 
Electric Field Due to solid sphere of radius 
which having charge density 
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