Define potential at a point in an electric field.

The electric potential at a point in an electric field has the unit of

Define electric field

A force of 2.5 N is experienced by a point charge of 5xx 10^-6 C at a point in an electric field. The potential gradient at that point in SI unit is

There exists a potential difference of 5V between two points in an electric field. Work done in moving a charge of 7C from one point to the other is

There exists a potential difference of 5 V between two points in an electric field. Work done in moving a charge Of 7 C from one point to the other is [