Physics

Problem

A charge of

2\,\mu\text{C}

is moved from point A to point B along a surface whose electric potential everywhere is

150\,\text{V}

. The electric field in the region is non-zero. Which one of the following is the work done by an external agent in this process? a)

3\times10^{-4}\,\text{J}

-3\times10^{-4}\,\text{J}

0\,\text{J}

d) Cannot be determined without knowing the path length