Iska caabbinta xoogga korontada (EMF) ee danabka dhamaadka
Korontada korontadu waxay ku socotaa wareeg xiran, laga bilaabo awood sare ilaa awood hoose. Marka korontadu ay dhex marto qayb ka mid ah iska caabbinta korontada , waxaa jira hoos u dhac ku yimaada tamarta korontada sababtoo ah tamarta korontada ayaa loo isticmaalaa iska caabbinta. Si loo hubiyo in korontadu ay sii socoto inay ka soo wareegto awood sare ilaa awood hoose, waa inay jirtaa qalab lagu kordhiyo tamarta korontada, sida xoogga elektarooniga (EMF), ama si ka sii saxsan, isha danabka korontada. EMF ama isha danabka korontada waa qayb u beddesha nooc ka mid ah tamarta tamar koronto, tusaale ahaan baytari, kaydiye, unug qorrax, ama matoor koronto.
Isha danabka korontada (emf)
Sawirka dhinaca ku yaal waa sawir fudud oo ah wareeg xiran oo leh emf (ε) iyo iska caabinta (R). Xariiqda toosan ee dheer ee isha emf waxay matashaa awood sare halka xariiqda toosan ee gaaban ay matasho awood hoose. Dalacaadda korontada waxay ka dhaqaaqdaa awood sare una gudubtaa awood hoose. Dalacaadda korontada ee ku dhaqaaqda waqti cayiman waxaa loo yaqaan dalac koronto, halkaas oo jihada dalacaadda korontada lagu tilmaamayo fallaadha.
Marka uu jiro awood sare, dallacku wuxuu leeyahay tamar awood koronto. Tamarta awoodda korontadu way yaraataa marka dallacku dhex maro iska caabin. Marka dallacku uu ku dhaqaaqo isha emf laga bilaabo awood hoose una gudbo awood sare, tamarta awoodda korontadu way korodhaa.
Caqabadaha ku jira
Marka dallacaadda korontadu ay ka dhaqaaqdo isha emf laga bilaabo awood hoose ilaa awood sare, dallacaaddu waxay la kulantaa iska caabin. Ilaha danabka korontada ee nolosha dhabta ah badanaa waxay leeyihiin caqabadaha gudaha, kaas oo lagu muujiyo calaamadda r. Marka koronto ay dhex marto caqabadaha gudaha (r), waxaa jira hoos u dhac ku yimaada kartida ama tamarta korontada oo yaraata.
danab Terminal
Danabka terminal-ka (V) ama danabka isku-xidhka waa danabka saafiga ah ee uu soo saaro isha danabka korontada ama isha emf. Xisaab ahaan, waxaa lagu muujiyaa isla'egta:
V = ε – I r
Macluumaadka:
V = Danabka terminalka, ε = emf, I = koronto, r = iska caabin gudaha ah.
Haddii baytari 12 Volt ah uu leeyahay iska caabin gudaha ah oo ah 0,2 Ω markaas marka uu hadda 2 A ka qulqulo baytariga, danabku waa 12 – (0,2)(2) = 12 – 0,4 = 11,6 Volts.
Marka uusan jirin koronto ka soo baxaysa baytariga, danabka terminalka = emf. Tusaale ahaan, haddii emf uu yahay 12 volts, markaa danabka terminalka waa 12 volts. Haddii hadda ka soo baxaysa isha emf, danabka terminalka waa ka yar yahay emf.
EMF waa danabka korontada ee ku qoran, tusaale ahaan, batteriga, halka danabka isku xidhka uu yahay danabka korontada ee dhabta ah ama farqiga suurtagalka ah ee dhabta ah, halkaas oo qiimaha uu saameeyo qulqulka korantada ee ku socda batteriga.
