An infinite dielectric sheet having charge density `sigma` has a hole of radius `R` in it. An
Channel: Doubtnut
Date: 26/01/2020

An infinite dielectric sheet having charge density `sigma` has a hole of radius `R` in it. An electron is released on the axis of the hole at a distance `sqrt(3)R` from the center. Find the speed with which it crosses the center of the hole.