Two parallel conducting plates having equal and opposite charge are shown. The line XY is perpendicular to the plates. A charge of q = -15.0 μC and m = 0.00250 g is moved from the top plate, having a voltage (potential) of 15.0 V to the bottom plate, having a voltage (potential) of 8.0 V. The distance from A to B is 0.0125 cm.
1 - What is the potential difference undergone by the charge?
2 - What is the work done in moving the charge from A to B? Express your answer in both J and eV.