Which unit is used to measure the work per unitcharge required to move a charge in an electricfield?

The unit used to measure the work per unit charge required to move a charge in an electric field is the volt (V).

In more detail, the volt is defined as one joule of work done on or by a charge of one coulomb. Therefore, when we say that one volt is equal to one joule per coulomb ($1 \, \text{V} = 1 \, \text{J/C}$), it defines the electrical potential difference that drives the movement of electric charge within an electric field. This relationship is fundamental in the study of electricity and circuits, illustrating how energy is transferred when charges move under the influence of an electric field.