Physics electric potential help?

Update: What (in N/C) is the electric field 2.00 m from the center of the terminal of a Van de Graaff with a 8.00 mC charge, noting that the field is equivalent to that of a point charge at the center of the terminal? At this distance, what force (in N) does the field exert on a 2.00 µC charge on the Van de Graaff's... show more What (in N/C) is the electric field 2.00 m from the center of the terminal of a Van de Graaff with a 8.00 mC charge, noting that the field is equivalent to that of a point charge at the center of the terminal?
At this distance, what force (in N) does the field exert on a 2.00 µC charge on the Van de Graaff's belt?
please explain
1 answer 1