Please Solve All Questions A charged metal sphere of radius $R_1=6\mathrm{.}0cm$ carrying a charge $30nC.$ The electric

potential at the center of the sphere is$,(1\mathrm{.}5-$pnts$)$

A$)$ Zero

B$)4495V$

C$)74917V$

D$)$ None of the above

Two charged metal spheres of radius $R_1=6\mathrm{.}0cm$ and $R_2=3\mathrm{.}0cm$ are separated by a

distance of $50m$ from their centers and are connected by conducting thin wire. A total

charge $Q=+80nC$ is placed on one of the spheres. $(4-$pnts$)$

A$)$ What is the electric field near the surface of sphere of $R_1=3\mathrm{.}0cm?$

B$)$ What is the electric potential at the center of the sphere of $R_2=6\mathrm{.}0cm.$