$1.$ The electric field has a constant value of $3\mathrm{.}2$ x $103$ V$/$m and is directed downward. The field is the same everywhere. The potential at a point P within this region is $108$ V$.$ Find the potential at the following points: $($a$)8\mathrm{.}3$ x $10-3$ m directly above P$,($b$)3\mathrm{.}9$ x $10-3$ m directly below P$,($c$)4\mathrm{.}9$ x $10-3$ m directly to the right of P$.$

$2.$ Below

An empty parallel plate capacitor is connected between the terminals of a $8\mathrm{.}66-$V battery and charges up$.$ The capacitor is then disconnected from the battery, and the spacing between the capacitor plates is doubled. As a result of this change, what is the new voltage between the plates of the capacitor?