The ratio of energy density in the electric field $\left(u_E\right)$  to square of electric potential  $\left(V^2\right)$ at a point A at a distance x from a static point charge Q is  $\eta$. (Assuming electric potential at infinity to be zero)

The dimensional formula for the ratio $\eta$ is $\left[M^{-1}{L}^{-5}{T}^4{A}^2\right]$

The value of the ratio at a distance 2x from the point charge Q is $\frac{\eta }{2}$

The value of the ratio at a distance 2x from the point charge Q is  $\frac{\eta }{4}$

The dimensional formula for the ratio  $\eta$ is $\left[M^{-1}{L}^{-5}{T}^4{A}^{-2}\right]$