Electromagnetic Field Theory
The field at any point on the axis of a current carrying coil will be

 zero.
 parallel to axis.
 perpendicular to the axis.
 at angle of 45° with the axis.

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

 Gauss’s static that divergence of D = ρu.
 For a uniform long charged line with l1 c/m the electric field intensity E is given as E = ρL/(π ε0.r).
 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.
 Gauss’s law states that total electric flux through any surface is equal to the total charge enclosed by surface.

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Electromagnetic Field Theory
Inside a hollow conducting sphere

 electric field changes with distance from the center of the sphere.
 electric field changes with magnitude of the charge given to the conductor.
 electric field is a non zero constant.
 electric field is zero.

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