Sauɗa aiki na karshe a sayaradda jirgin magance ta bayan yadda ake gudanar da tsari, fasaha da kudu a cikin saukar da tsari mai dace (DC). Yana nuna cewa tsari a kan kungiyar biyu ana shafi da fasaha a kan kungiyar biyu, kuma ana shafi da kudu a kan kungiyar biyu. Yana nuna wannan muryar a matsayin Ohm’s Law, wanda zai iya tabbatar da shi a tushen masu lissafi kamar:
I = V/R
idani:
I – Tsari a kan kungiyar (A)
V – Fasaha a kan kungiyar (V)
R – Kudu a kan kungiyar (Ω)
Ohm’s Law shine muryar muhimmanci a sayaradda jirgin magance da ake amfani da shi don kawo siffar da suka gudanar da saukar da tsari mai dace. Ana basa haka a idan ake samun cewa tsari a kan kungiyar ana shafi da kudu a kan kungiyar da fasaha da aka faɗa a kan kungiyar.
Sauɗa aiki na karshe ya kunshi ne kawai saukar da tsari mai dace. Ba ya kunshi ba a saukar da tsari mai yawa (AC), wadannan suka gudanar da kyau saboda tsari mai yawa. Sauɗa aiki na karshe ya kunshi ne kawai saukar da take daidai, wadannan suka ci gaba a matsayin Ohm’s Law. Sa ukun, saukar da ba su daidai, kamar wadannan da ke da diod ko transistor, ba su ci gaba a matsayin Ohm’s Law kuma ba za a iya kula da shi a matsayin sauɗa aiki na karshe.
Bayanin: Koyar ta fi karfin mai, rubutu mai gaskiya na karshen shugaban. Idan ana ɗaukara da wani babu ƙarin karfin don tabbataccen shugaban za'a ɓangarre.