Two spherical shells are as shown in figure.
Let r be the distance of a point from their common centre. Which of the following pair is not correctly paired?
A
Electric field for 
is constant for 
and vary for 
is constant for and vary for B
Electric potential for 
is constant
is constant C
Electric potential for 
is constant for 
and vary for 
is constant for and vary for D
Electric field for 
is zero for 
and vary for 
is zero for and vary for
Text Solution
Verified by ExpertsThe correct answer is:
A
For 
as no charge is inside region 
V = constant for r 
For 
is constant for 
as point lies inside the sphere of radius 
.
Also, for 
, charge 
does not contribute to the field as it lies outside the surface.
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