1.

Consider a region inside which there are various types of charged but the total charge is zero. At points outside the region

Answer»

the ELECTRIC field is necessarily zero 
the electric field is due to the dipole MOMENT of the charge distribution only
the dominant electric field as `alpha 1/r`for LARGE r, where r is the distance from a origin in this region 
the work done to move a charged particle along a closed path, away from the region, will be zero

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