“Potential differ

Given that the potential difference is 1 V. The potential difference is the Difference in the potential between two points that represents the work involved or energy released in transfer of a unit quantity of electricity from one point to the other. The figure below illustrates it

V_A = potential at A

V_B = potential at B

From the above definition of the potential difference the above statement means that 1Joule of work is being done to move a charge of 1 coulomb from point A to point B.