QUESTION ${?}^{}$

ANSWER

A thin, spherical shell of radius $R$ is made of an insulating material. This spherical shell holds a net charge of Q$,$ which is distributed uniformly over the surface of the spherical shell. What is the surface charge density, $,$ of this charged spherical shell?

$=\frac{Q}{R^2}$

$=\frac{Q}{\frac{3}{3}{R}^3}$

$=Q{R}^2$

$=\frac{Q}{4R^2}$

$=\frac{Q}{R^3}$

IDON'T KNOWYET