"not required" is vague.
For example, the heating effect of electric current along the wire feeding a domestic household is "not required", or ignored.
In general, when the resistance of a conductor is very small, the heating effect is negligible.
Along transmission lines which go over long distances, even the minute amount of heating effect (loss) has to be accounted for.
Two instances during which the heating effects of electric current is not required pls
1 answer