Write an equation for the electric potential due to a volume charge distribution.

(N/A) The electric potential $V$ at a point $P$ due to a volume charge distribution with charge density $\rho$ in a volume $V'$ is given by the integral equation:
$V = \frac{1}{4\pi\epsilon_0} \int_{V'} \frac{\rho(r') \, dV'}{|r - r'|}$
Where:
$1. \epsilon_0$ is the permittivity of free space.
$2. \rho(r')$ is the volume charge density at a position vector $r'$.
$3. dV'$ is the infinitesimal volume element.
$4. |r - r'|$ is the distance between the observation point $r$ and the source point $r'$.