# An electric field

Question:

An electric field $\left.\overrightarrow{\mathrm{E}}_{=} \overrightarrow{\mathrm{i}}_{20}+\overline{\mathrm{J}}_{30}\right) \mathrm{N} / \mathrm{C}$ exists in the space. If the potential at the origin is taken to be zero, find the potential at

Solution: