Electric intensity on a pole.

Density of an electric field:

*

Electric intensity:

*

Force of interaction with the partial static charge:

*

Force of interaction with the partial static charge on equator:

*

The actual electric intensity on a pole is less than on equator, but from the point of view of interaction with the partial static charge, for three-dimensional perception, the electric intensity at a motion to a pole is incremented, whereas we cannot identify change of the underload charge (by the way, irregularity of value of an electric intensity is characteristic for a propellented point charge).
Coefficient of magnification of intensity for three-dimensional perception:

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