Isn't the electric field:
\vec{E} = \frac{V}{s\cdot ln(\frac{b}{a})}\hat{s} (\ast)
obtained by treating the nested cylinders as a wire and then taking the line integral from a to b of the electric field?
\vec{E} = \frac{\lambda}{2 \pi \epsilon_0 s}\hat{s} (1) This is the E-Field of a...
Here is a solution: Get a degree in Engineering Physics!
Just don't expect it to be very much fun, and count on it taking five years instead of four. But at the end you will have mad respect and a whole bunch of potential jobs!