Once you start dealing with EM fields and even fairly common filter designs in the AC domain, the hydraulic analogy starts breaking down and becomes an impedeme

Once you start dealing with EM fields and even fairly common filter designs in the AC domain, the hydraulic analogy starts breaking down and becomes an impedement to learning... so my prof would say. I was never taught the water analogy but I saw quite a few students struggle trying to wrap their heads around a physics (EM, RF, potentials, etc) based circuit design and theory.