Physics - Magnetism Question with Solution | TestHub

A thin long cylindrical shell of radius R carries a uniform surface charge density $\sigma$. It rotates with a constant angular velocity $\omega$ in a gravity free space. Its mass per unit surface area is $\lambda$. The sheet from which the cylinder is made can withstand a maximum stress of T N/m. under longitudinal loading. It is known that the relative permeability ot cylinder is 1 . [Magnetostatic energy density is given by $\frac{{\mathrm{B}}^2}{2{\mu }_0}$ ]