Figure shows two large cylindrical shells having uniform linera charge densities `+ lambda` and
Channel: Doubtnut
Date: 26/01/2020

Figure shows two large cylindrical shells having uniform linera charge densities `+ lambda` and `- lambda`. Radius of inner cylinder is \'a\' and that of outer cylinder is \'b\'. A charged particle of mass m, charge q revolves in a circle of radius r. Then, its speed \'v\' is : (Neglect gravity and assume the radii of both the cylinders to be very small in comparison to their length.)