Electromagnetic Field Theory
The statement which is not correct from the following:

 An electric flux line is an imaginary path or a line drawn in such a way, that its direction at any point is the direction of electric field at that point.
 For a uniform long charged line with l1 c/m the electric field intensity E is given as E = ρL/(π ε0.r).
 Gauss’s law states that total electric flux through any surface is equal to the total charge enclosed by surface.
 Gauss’s static that divergence of D = ρu.

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Electromagnetic Field Theory
Magnetostriction is a phenomenon of

 change in physical dimensions of ferromagnetic materials during magnetism.
 generation of magnetism in electrical conductors.
 generation of electricity in ferromagnetic materials.
 change in permeability of ferromagnetic materials during magnetism.

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