@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t6-8>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "6-8" ;
  skosxl:prefLabel "electric current density"@en ;
  skosxl:altLabel "bb(ii(J))"@en ;
  skos:definition "vector quantity equal to the sum, for the charge carriers within a volume element of quasi-infinitesimal volume stem:[V], of the products of their electric charge stem:[Q_i] and their velocity stem:[sf(ii(v))_i], divided by the volume stem:[V], given by\n\n[stem%unnumbered]\n++++\nbb(ii(J))(bb(ii(r))) = bb(ii(J)) = rho sf(ii(v))\n++++\n\nwhere stem:[i] is the rank of the charge carrier\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-6> ;
  isq:hasUnit [
    skos:notation "A/m^2" ;
    skosxl:prefLabel "ampere per square metre"@en
  ] ;
  isq:hasUnit [
    skos:notation "m^(-2)*A" ;
    skosxl:prefLabel "ampere per square metre"@en
  ] ;
  skos:note "There can be different charge carriers with different velocities.\n\nElectric current stem:[I] (<<t6-1>>) through a surface stem:[\"S\"] is\n\n[stem%unnumbered]\n++++\nI = int_\"S\" bb(ii(J)) e_\"n\" \"d\"A\n++++\n\nwhere stem:[e_\"n\" \"d\"A] is the vector surface element.\n\nSee <<iec60050-121,locality:item=\"121-11-11\">>.\n"@en ;
  iso:urn <urn:iec:std:iec:80000-6:2022-11:::6-8> .