'''ElectricalKonduktivitas conductivitylistrik''' isadalah aukuran measuredari ofkemampuan a material's ability tosuatu [[electrical conduction|conductbahan]] anuntuk menghantarkan [[electricarus currentlistrik]]. WhenJika suatu anbeda [[electricalpotensial potential differencelistrik]] isditempatkan placedpada acrossujung-ujung asebuah conductor[[konduktor]], its[[muatan|muatan-muatan movable]] chargesbergeraknya flowakan berpindah, giving rise to anmenghasilkan electricarus currentlistrik. Konduktivitas Thelistrik conductivity<math>\sigma\!</math> σdidefinsikan is defined as thesebagai [[ratio]] of thedari [[currentrapat densityarus]] <math>\mathbf{J}\!</math> toterhadap thekuat [[electricmedan fieldlistrik]] strength <math>\mathbf{E}\!</math>:
:<math>\mathbf{J} = \sigma \mathbf{E}</math>.
Pada beberapa jenis bahan dimungkinkan terdapat konduktivitas listrik yang anisotropik.
It is also possible to have materials in which the conductivity is [[anisotropic]], in which case σ is a 3×3 [[matrix (mathematics)|matrix]] (or more technically a rank-2 [[tensor]]) which is generally [[symmetric matrix|symmetric]].
