In many situations, to find the electric field using the gauss law, we can use the simplified equation 
, where 
is the permittivity of free space, A is the area of Gaussian surface and q enclosed is the net charge enclosed by the Gaussian surface. Among the following situations, this equation can be used
A
only when the Gaussian surface is an equipotential surface
B
only when 
is constant on the surface
is constant on the surface C
only when the Gaussian surface is an equipotential surface and 
is constant of the surface
is constant of the surface D
for any choice of Gaussian surface|
Text Solution
Verified by ExpertsThe correct answer is:
C
only when the Gaussian surface is an equipotential surface and 
is constant of the surface
Magnitude of electric field is constant & the surface is equipotential
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