Symbol Enhet ----------------------------------------- Strøm | I Ampere A Spenning| U Volt. V Motstand| R Ohm. (OMEGA Tegn) U ----- R I U=R*I I=U/R R=U/I AC = Vekselstrøm DC = Likestrøm U = 4V I = 0.3A R = 4/0.3 = Koplingsskjema (X) = Lyspære ------- = Ledning ---| I--- = Batteri - +
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