Linked from
The 23 pages that link to Electrical resistivity, each with the reason it gives.
Electrical insulationRelated: Its value determines how much current an insulating material permits.
Eddy currentRelated: Resistivity controls eddy-current strength and the heat they dissipate.
Strain gaugeRelated: Gauge resistance depends on both the conductor’s geometry and its resistivity.
Gutta-perchaRelated: Its high resistivity helped make gutta-percha useful as cable insulation.