An isolated metal sphere of volume V0 V_0\,V0 is given a charge QQQ, resulting in an electric potential V1 V_1\,V1 at its surface. The sphere is then melted down and recast into a single solid sphere of volume 8V08V_08V0. Assuming the charge Q Q\,Q remains unchanged, what is the new electric potential at the surface of the sphere?
0.125V10.125 V_10.125V1
0.25V10.25 V_10.25V1
0.50V10.50 V_10.50V1
2.00V12.00 V_12.00V1
