A circular ring of radius R with uniform positive charge

Last updated: 6/12/2023

A circular ring of radius R with uniform positive charge density per unit length is located in the YZ plane with its centre at the origin O A particle of mass m and positive charge q is projected from the point P R 3 0 0 on the positive X axis directly towards O with initial velocity v Find the smallest non zero value of the speed y such that the particle does not return to P