A charge q is enclosed by an imaginary Gaussian surface.
If radius of surface is increasing at a rate 
, then
A
flux linked with surface is increasing at a rate 
B
flux linked with surface is decreasing at a rate 
C
flux linked with surface is decreasing at a rate 
D
flux linked with surface is 
Text Solution
Verified by ExpertsThe correct answer is:
D
From the Gauss’ law 
in which 
is the net charge inside an imaginary closed surface (a Gaussian surface) flux does not depend on the radius of imaginary enclosed surface.
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