Electromagnetic Field Theory
Which is the major factor for determining whether a medium is free space, lossless dielectric or a good conductor

 Constitutive parameters.
  Loss tangent.
 Attenuation constant.
 Reflector coefficient.

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

 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.
 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).

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Electromagnetic Field Theory
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at

 upper surface of the conductor.
 midway between the conductor and ground.
 the ground surface.
 lower surface of the conductor.

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