in a conductor, what is the material through which it is difficult to conduct an electric current called?

In general, metals are excellent conductors, allowing current to flow freely. Insulators are substances that make current flow difficult.How do insulators work?a substance with a conductivity so low that very little current can flow through it. insulation in the form of a unit, frequently made of glass or porcelain, intended to support and electrically isolate a charged wire.How does current flow work?While current and electron flow within the same direction, they do so in opposite directions. Electrons move from a negative potential to a positive potential, and vice versa. The number of electrons that flow through a conductor's cross section in a second is used to calculate current.To know  more about insulators visit:https://brainly.com/question/2619275#SPJ4