Umthetho Ohm sika for the uchungechunge ephelele

umthetho Ohm sika ingenye Izinkolelo eziyisisekelo zesayensi yemvelo. Ifomula jikelele esivumelekile iketango ephelele, futhi endaweni yayo, kusho ukuthi ukushuba lwamanje ilingane quotient etholwe sokuhlukanisa ukubaluleka volts ezwakalisa, kunani okusibonisa amandla samanje amperes. Lokhu kwencika ebonisa ukuthi ukunciphisa amandla ukumelana ukwanda zamanje. Lo mbuzo ubuzwa: kungenzeka uthole samanje kakhulu, ukunciphisa ukumelana ekuqaleni? Prakthiza ebonisa ukuthi lokhu akunakwenzeka. umthetho Ohm sika lesifunda sakhona Imininingwane ibonisa ukuthi voltage kumele zihlukaniswe inani, ukumelana angumfelandawonye ibanga njengoba isamba ukumelana ukumelana ancike umthombo zamanje zangaphakathi nezangaphandle. Nciphisa ukumelana sangaphakathi sohlelo zero akunakwenzeka. Kungenjalo, ematfuba ukuqhuma ibhethri kuphezulu kakhulu.

Uyini Ukumelana ngaphakathi nangaphandle, othi umthetho Ohm sika for the uchungechunge ephelele? Uma, ukwenza isibonelo, ixhunywe wesifunda isibani, okungukuthi ukumelana bangaphandle kule isibani. I ukumelana yangaphakathi njalo livela ibhethri ekhiqizwa ngaphakathi ohlelweni uqobo. Uma ibhethri isetshenziswa esikhundleni iseli electrochemical, umthetho lo Ohm sika lonke wesifunda uyakucabangela ukumelana yesixazululo electrolyte kanye electrode. Uma ukumelana sangaphandle ingxenyana kwangaphakathi futhi lapho circuit ivaliwe, bese-ke isekhethi notshwala zamanje. Lokhu seqiwe zamanje ezingase egeleza lesi sifunda. imithombo yamandla izimoto ukukhombisa amagugu lamanje isekhethi, a esisongela ukuphila ezibucayi. Ngenxa yezizathu zokuphepha, ixhunywe kumadivayisi angaphandle, amabhethri kanye ukumelana anele ukuvimbela le nhlekelele.

Nge uchungechunge uxhumano Imininingwane ukumelana sangaphakathi wesifunda ibalwa ngokwengeza resistances ngayinye imithombo zamanje. Mayelana okucishe kufane nalokhu voltage yonkana ngamunye izingxenye otvetvlonnyh inenani elifanayo njengoba wamanje esikuziphathimandla unbranched ibalwa ngokungeza eziguquguqukayo ezibonisa ammeters ngamunye izigaba exhunywe ngokulinganisa. umthombo yamanje esisogwini ingxenye wesifunda akunamthelela ingxenye parallel ezixhunywe kulo.

Lapho ukusebenzisa umthetho Ohm sika for the uchungechunge ephelele? Isikhathi esiningi bajwayele abale yamanje eqondile izifunda kagesi, DC. Ukuze wenze izibalo kahle, kumelwe kukhunjulwe postulates Kihgofa. Okokuqala, isamba algebraic zamabutho zamanje engeyokuqala kuyinto ilingane no-zero. Okwesibili, umkhiqizo isamba algebraic bebutho zamanje kunoma iyiphi iluphu avaliwe branched uchungechunge bese uhudula tigaba wesifunda njalo ilingana nenani lezinombolo algebraic we voltage zitholiwe wesifunda.

Kungaphansi kwaziphi izimo lapho, kanjani futhi nini umthetho Ohm sika for the uchungechunge ephelele uvulekele? umcwaningi Swiss Georg Simon Ohm wafika manje edumile emhlabeni ifomula emhlabeni empirically. Watadisha isinyathelo magnetic wamanje futhi ngazama nokwenza ugesi ahlukahlukene asetshenziswa ucwaningo lwabo babashayeli ngezinto ezihlukahlukene futhi Alloys. Ohms kwaba physics lokuqala yaphawula nomthelela ukungawi umqhubi lokushisa. umthetho Ohm sika for the uchungechunge ephelele iye obonwa wezesayensi ngesikhathi esisodwa. Usosayensi wokuqala ukuba siqonde umthetho, babé abacwaningi Russian Jacobi futhi Lenz. kamuva American John. Henry kuqhathaniswa ifomula ezwakalisa umthetho Ohm sika for the uchungechunge ephelele, nge uziphu phakathi a ushiyiwe Igumbi udangele, futhi onguprofesa German E. Lommel ngokuthi kuvulwa "ithoshi elikhanyayo emkhakheni kagesi."