Disordered sp2 carbon of geological origin (shungite rocks of Karelia) with a set of various nanostructures (fullerene-like, graphene, ribbons) has promising technological properties. In this work, we studied the effect of nanosized carbon structures on the electrical properties. The impedance, active and reactance resistance, inductance of carbon-containing materials were measured in the frequency range from 50 kHz to 15 MHz. The inductive nature of the conductivity of shungite carbon was found. With increasing frequency, the resistance of shungite carbon increases. This nature of conductivity can be associated with the predominant effect on the electrical properties in shungites of nanosized ribbon structures.