Gauss' law---thin spherical shell INTRODUCTION- hello, actually i had been doing some problems on gauss' law from H.C.Verma "concepts of physics". i'm continuously having problem with "wht's the field on the surface of a thin spherical, conducting shell? THE EXACT PROBLEM IS- "Consider the following very rough model of beryllium atom. the nucleus has 4 protons and 4 nutrons confined to a small volume of radius 1E-15 m. the two 1s electrons make a spherical charge cloud at an average distance of 1.3E-11 m from nucleus, whereas the 2 2s electrons make another spherical cloud at an average distance of 5.2E-11 m from the nucleus. Find the electric field at (a)a point just inside the 1s cloud and (b)a point just inside the 2s cloud. please help." THE WAY I TRIED TO SOLVE- for a point just inside the 1s cloud the electric field wud be due to the nucleus, thats for sure. but wht abt the charge on the 1s cloud? wont that produce an electric field at the point? if not, then why? this is where i'm facing the problem.