We would say that he had made a coil with “pure resistance” or else that he had made a “non-inductive resistance.”
This is called a non-inductive winding and is in reality an example of differential winding.
It is known that all reflexive numbers are non-inductive, but it is not known that all non-inductive numbers are reflexive.
An excellent type of non-inductive resistance is the ordinary carbon-filament incandescent lamp.
Between the neutral point of these two non-inductive windings is connected the clearing-out drop circuit.
