Question $21(5$ points$)$

An insulating, spherical shell of radius $R$ has a uniform charge distribution of $Q.$

An electron is placed at the inner surface of the shell and is then moved directly to the opposite side of the inner shell.

What is the change in the potential energy of the system during this movement?

$0$ J

$\frac{-eQ}{4{}_0{R}^2}$

$\frac{eQ}{4{}_{0}R}$

$\frac{-eQ}{4{}_{0}R}$

$\frac{eQ}{4{}_0{R}^2}$