A thin ring of radius `R` metre has charge `q` coulomb uniformly spread on it. The ring
Channel: Doubtnut
Date: 19/01/2020

A thin ring of radius `R` metre has charge `q` coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of `f` revolution/s. The value of magnetic induction in `Wb m^(-2)` at the centre of the ring is