Ohm da dokar ta ga cikakken sarkar

Ohm ta dokar ne daya daga cikin manyan ka'idodi na kimiyyar lissafi. A general dabara da cewa yana aiki ne domin cikakken sarkar, kuma domin da yankin, ya ce cewa yanzu tsanani ne, sunã daidaita da quotient samu ta hanyar rarraba da darajar bayyana volts, to da darajar da nuna ƙarfi daga cikin halin yanzu a amperes. Wannan dogaro nuna cewa rage juriya da karfi na yanzu ƙaruwa. The tambaya: shi ne zai yiwu don samun mafi halin yanzu, rage jure karce? Yi ya nuna cewa wannan ba zai yiwu ba. Ohm ta doka ga jimlar kewaye nuna cewa irin ƙarfin lantarki dole ne a raba ta da jimlar, a hade da juriya na nesa kamar wata Naira Miliyan Xari da juriya na waje da kuma na ciki juriya-dogara halin yanzu Madogararsa. Rage ciki juriya da tsarin sifili ba zai yiwu. In ba haka ba, yiwuwar baturi fashewa ne sosai high.

Mene ne ciki da waje juriya, wadda ta ce Ohm da dokar ta ga cikakken sarkar? Idan, misali, an haɗa da fitilar kewaye, cewa shi ne waje jure wannan kwan fitila. A ciki juriya da yaushe zo daga baturin da aka generated a cikin tsarin da kanta. Idan baturi ya yi amfani maimakon da electrochemical cell, da Ohm ta doka ga dukan kewaye daukan la'akari da juriya na electrolyte bayani da wayoyin. Idan waje juriya na sa'a guda daga ciki, kuma a cikinta da kewaye aka rufe, sa'an nan ta shi gajarta da'ira halin yanzu gudana. Wannan iyakar darajar halin yanzu da cewa za a iya daga ƙarƙashinsu, ta hanyar wannan kewaye. Ikon kafofin a motoci nuna da dabi'u na yanzu short-kewaye, wani m rai barazana. Domin aminci dalilai, shi an haɗa zuwa waje na'urorin, batura da isa jure hana bala'i.

Tare da jerin dangane da jimlar ciki juriya na kewaye da aka lasafta ta ƙara da resistances na kowane daga cikin halin yanzu kafofin. A layi daya dangane da irin ƙarfin lantarki a fadin kowane otvetvlonnyh rabo yana da guda darajar a matsayin halin yanzu a cikin unbranched sarkar da aka lasafta ta ƙara da canji cewa nuna ammeters kowane daga sassan alaka a layi daya. Yanzu tushen located a kan kewaye rabo yana da wani sakamako a kan layi daya rabo da alaka da shi.

Ina zuwa nema Ohm da dokar ta ga cikakken sarkar? Mafi yawa suna amfani da yin lissafi da na yanzu a mikakke lantarki haihuwarka, DC. Don yin lissafin yadda ya kamata, shi dole ne a tuna postulates Kihgofa. Da fari dai, algebraic Naira Miliyan Xari da halin yanzu sojojin a kumburi ne ya daidaita da sifili. Na biyu, da samfurin na algebraic Naira Miliyan Xari da na yanzu karfi a wani rufaffiyar madauki branched sarkar da kuma ja sassan na kewaye shi ne ko da yaushe daidaita da algebraic Naira Miliyan Xari da gano irin ƙarfin lantarki a cikin kewaye.

A karkashin abin da yanayi, da yadda kuma a lõkacin da Ohm da dokar ta ga cikakken sarkar da aka bude? Swiss bincike Georg Simon Ohm zo zuwa yanzu shahara a duniya dabara empirically. Ya yi karatu da Magnetic mataki na halin yanzu da kuma gudanar da wani gwaji tare da daban-daban da janareto amfani da su gwajen conductors na daban-daban karafa da kuma gami. Ohms ya fara likita da cewa alama sakamako a kan juriya da shugaba zazzabi. Ohm da dokar ta ga cikakken sarkar an gane da kimiyya al'umma a lokaci daya. A farko masanin kimiyya godiya da dokar, sun zama Rasha bincike Jacobi da Lenz. American Yahaya. Henry daga baya idan aka kwatanta da dabara bayyana Ohm da dokar ta ga cikakken sarkar, da zik din a tsakiyar wata yashe ciki daki, kuma a Jamus farfesa E. Lommel kira bude "wani mai haske mika wutar a filin daga da wutar lantarki."