A system consits fo a thin charged  wire ring  of radius `R` and a very long uniformly charged
Channel: Doubtnut
Date: 2020-08-23

A system consits fo a thin charged  wire ring  of radius `R` and a very long uniformly charged thread oriented along the  axis  of the ring, with  one of its ends  coinciding with the centre of the ring. The total  charge  of the ring, with one of the ring so equal to `q`. The charge  of the  thread  (per unit length) is equal to `lambda`. Find the interaction froce between  the ring and the thread.