∇x E≠0 for an induced electric field whereas for field produced by static charges we have ∇x E=0.
This is a very huge difference in the property of a vector field,then why do we call both of them electric field ?
The volume charge density of spherical shell varies as ρ=-kr.If we have to calculate electric filed using gauss's law, can we treat as E. dA as E(dA) as there is azimuthal symmitry
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