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(A) The ability of a conductor to retain charge depends on the uniformity of the surface charge distribution.For a spherical conductor,the charge dist

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(A) The ability of a conductor to retain charge depends on the uniformity of the surface charge distribution.For a spherical conductor,the charge distributes itself uniformly over the entire surface due to symmetry.In non-spherical conductors (like pear-shaped or lightning conductors),the charge density is higher at regions with smaller radii of curvature (sharp points).This leads to a higher electric field intensity at sharp points,which causes the ionization of surrounding air,resulting in the leakage of charge (corona discharge).Therefore,a spherical conductor is best suited to retain charges for a longer time as it minimizes charge leakage.

Four metal conductors having different shapes:
$1.$ $A$ sphere
$2.$ Cylindrical
$3.$ Pear
$4.$ Lightning conductor
are mounted on insulating stands and charged. The one which is best suited to retain the charges for a longer time is:

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Four metal conductors having different shapes:$1.$ $A$ sphere$2.$ Cylindrical$3.$ Pear$4.$ Lightning conductorare mounted on insulating stands and charged. The one which is best suited to retain the charges for a longer time is: