W F D cosTH where W is the amount of work F is the vector of force D is the magnitude of displacement and TH is the angle between the vector of force and the vector of displacement. The unit of work depends upon the unit of force and the displacement. Ie Work done F x dl.
DefinitionSummary Work is a measure of change of energy.
A variation would be W V delta P where V is volume and delta P is the change in pressure. Work is done when an object moves in the same direction as the force is applied and also when force remains constant. Work done 600 N 40 m. If the distance moved d is not in the direction of the electric field the work expression involves the scalar product.