Physics

Problem

An external agent does

+8\,\text{J}

of work in moving a

+4\,\text{C}

charge from point S to point T. What work will the same agent have to do to move a

-4\,\text{C}

charge from S to T along the same path? a)

+8\,\text{J}

-4\,\text{J}

-8\,\text{J}

+4\,\text{J}