a copper disc of diameter `20 cm` makes `1200` r.p.m. about its natural axis kept parallel to a
Channel: Doubtnut
Date: 09/02/2020

a copper disc of diameter `20 cm` makes `1200` r.p.m. about its natural axis kept parallel to a uniform magnetic field of `10^(-2)T`. The potential difference between the centre and edge of the disc is