14 1 2 3 A thin disc of radius b 2a has a concentric hole of

Last updated: 5/28/2023

14 1 2 3 A thin disc of radius b 2a has a concentric hole of radius a in it see figure It carries uniform surface charge o on it If the electric field on its axis at height h h a from its centre is given as Ch then value of C is I aeo 2 0 4a 0