ðɪs fˈʌŋkʃən ɪz ˈɔfən ɹᵻfˈɜːd tʊ æz ðɪ ɪlˌɛktɹoʊstˈæɾɪk pətˈɛnʃəl ˈɛnɚdʒi ʌvðə sˈɪstəm ʌv tʃˈɑːɹdʒᵻz ɪn wɪð ɹˈɛfɹəns tə ðə zˈiəɹoʊʌvpətˈɛnʃəl.
This function  is often referred to as the electrostatic potential energy of the system of charges in  (with reference to the zero-of-potential ).