Chinyorwa nezveKunobva simba remagetsi emf Kuramba kwemukati Voltage yemagetsi
Mhepo yemagetsi inoyerera mudenderedzwa rakavharwa, kubva pakukwanisa kukuru kusvika pakukwanisa kushoma. Kana magetsi achifamba nepakati pechinhu chinodzivisa magetsi, pane kudzikira kwesimba remagetsi nekuti simba remagetsi rinoshandiswa pakudzivisa uku. Kuti magetsi arambe achiyerera kubva pakukwanisa kukuru kuenda pakukwanisa kushoma,
panofanira kunge paine mudziyo wekuwedzera simba remagetsi, chishandiso ichi isimba remagetsi (emf) kana kuti chinonzi simba remagetsi. Emf kana kuti simba remagetsi chinhu chinoshandura rudzi rwesimba kuita simba remagetsi, zvakaita semabhatiri, masero ezuva, kana majenareta emagetsi.
Kunobva simba remagetsi (emf)
Mufananidzo uri padivi apa uri mufananidzo wakapfava wedunhu rakavharwa rine emf (ε) uye resistance (R). Mitsetse mirefu yakatwasuka panobva emf inomiririra kugona kukuru, nepo mitsetse mipfupi yakatwasuka ichimiririra kugona kwakaderera. Machaji emagetsi anotama kubva pakukwanisa kukuru kuenda pakukwanisa kwakaderera. Chaji yemagetsi inofamba panguva yakati inonzi magetsi, uko kutungamira kwemagetsi kunoratidzwa nemuseve.
Kana iri pa potential yakakura, charge ine energy potential yemagetsi. Energy potential yemagetsi inoderera kana electric charge ichifamba ichipfuura resistor. Kana electric charge ichifamba mu source ye emf kubva pa low potential kuenda pa potential yakakura, electric potential energy inowedzera.
Yemukati kuramba
Kana chaji yemagetsi ichifamba mukati mekwakabva emf, chaji dzinosangana nekusagadzikana. Chaji chaiyo yemagetsi muhupenyu inowanzova nekusagadzikana kwemukati, uko kunoratidzwa nechiratidzo r. Kana chaji yemagetsi ichipfuura nepakati pekusagadzikana kwemukati (r), simba remagetsi rinoderera.
Voltage yemagetsi
Voltage yemagetsi (V) ivoltage yemagetsi inogadzirwa nevoltage yemagetsi kana kuti source ye emf. Pamasvomhu, inoratidzwa kuburikidza nema equation:
V = ε – I r
V = Voltage yemagetsi, ε = emf, I = magetsi emagetsi, r = kudzivirira kwemukati.
Kana bhatiri re12 Volt riine resistance ye0.2 Ω saka kana 2 A yabuda kubva mubhatiri, voltage yeterminal i12 – (0.2) (2) = 12 – 0.4 = 11.6 Volt.
Kana pasina magetsi anoyerera kubva mubhatiri, kukosha kwemagetsi ekupedzisira = emf. Ngatitii emf = 12 Volts, ipapo magetsi ekupedzisira = 12 Volts. Kana paine magetsi anoyerera kubva kunobva emf, magetsi ekupedzisira anenge ari madiki pane emf.
Emf ivoltage yemagetsi yakanyorwa semuenzaniso pabhatiri, nepo voltage yemagumo iri voltage chaiyo yemagetsi kana musiyano chaiwo wepotenti, apo kukosha kwayo kunokanganiswa nemagetsi ari kuyerera mubhatiri.
