A uniformly conducting wire is bent to form a ring of mass `\'m\'` and radius `\'r\'`, and the ring
Channel: Doubtnut
Date: 26/01/2020

A uniformly conducting wire is bent to form a ring of mass `\'m\'` and radius `\'r\'`, and the ring is placed on a rough horizontal surface with its plane horizontal. There exists a uniform and constant horizontal magnetic field of induction `B`. Now a charge `q` is passed through the ring in a very small time interval `Deltat`. As a result the ring ultimately just becomes vertical. Calculate the value of `g`(acceleration due to gravity) in terms of other given quantities. Assume that friction is sufficient to prevent slipping and ignore any loss in energy.