While learning the Lumped Circuit Abstraction (and the Lumped elements discipline), an inductor was considered a lumped element. But I fail to see how it fits the requirements of LCA:
- For it, the \$\frac{d\phi}{dt}\$ is not zero.
- In a circuit with an inductor, (in AC supply), resistances would not be the only irreversible energy loss, owing to the inductor's em waves.
Although there are various ways to put in the restrictions after which LCA is rendered valid, but these two requirements are commonly cited.