Problem $1$: $(6$ Points$)$ For the circuit below, determine the current labeled I$\_(2).$

$($A$)0\mathrm{.}89[4$ points$]$

$($B$)$ points

Problem $2$: $(6$ Points$)$ Three charges of $+5\mathrm{.}00$pC$,+2\mathrm{.}00$pC and $-3\mathrm{.}00$ pC are at the corners of an equilateral triangle

with side length $1\mathrm{.}75$ m $.$ What is the total potential energy stored in this system of three charges?

$($A$)+2\mathrm{.}79\backslash$times $10^(-13)$J

$($B$)$ points