Electricity and Magnetism

given potential

Problem by Hugo Alberto Luyo Sánchez
30 Nov 1999 00:00 WIB

In a region of space is a given potential
 $$V\left(r\right) = V_{0}\frac{\exp\left(-\mu r\right)}{r}$$
where $$\mu$$ is a constant. Find the electric field at any point in the region. Find the charge density distribution which gives rise to a potential of this form.