The electric field E is measured at a point 
generated due to various charge distributions and the dependence of E on d is found to be different for different charge distributions. Column-I contains different relations between E and d. Column-II describes different electric charge distributions, along with their locations. Match the functions in Column-I with the related charge distributions in Column-II.
Column-I | Column-II | ||
(A) | E is independent of d | (I) | A point charge Q at the origin |
(B) | (II) | A small dipole with point charges Q at and -Q at , ). Take | |
(C) | (III) | An infinite line charge coincident with the -axis, with uniform linear charge density . | |
(D) | (IV) | Ininite plane charge coincident with the xy -plane with uniform surface charge density. |
Text Solution
Verified by ExpertsB
For a point charge 
For point on the axis of a dipole:
For an infinite line charge:
For an infinite plane sheet of charge:
is independent of 
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