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 exits between the conductor and the ground. The maximum electric stress occur at

 The upper surface of the conductor.
 The ground surface.
 The lower surface of the conductor.
 Midway between the conductor and ground.

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Electromagnetic Field Theory
Which of the following statement is correct for divergence of electric and magnetic flux densities?

 Both are zero.
 These are zero for static densities but non zero for time varying densities.
 It is zero for the electric flux density.
 It is zero for the magnetic flux density.

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