Mutemo Ohm nokuda zvakakwana cheni

mutemo Ohm ndiyo imwe inokosha zvinodavirwa muchitendero wefizikisi. The vakawanda payakavakirwa chinonzi rakazara cheni, uye nokuda nharaunda yayo, akati kuti magetsi kusimba akaenzana quotient yaunganidzwa kugovera kukosha dzokunyora volts, kuti ukoshi iyo anoratidza simba kuitika mune amperes. kutsamira zvinoratidza kuti kuderedza kurwisa simba magetsi inowedzerawo. The mubvunzo unomuka: zvinobvira kuti Wekumusoro uno, achidzikisa kuramba muvare? Tsika zvinoratidza kuti izvi hazvibviri. mutemo Ohm nokuda zvachose vematunhu kunoratidza kuti voltage inofanira kugoverwa yose, kurwisa kwose nechekure sechinhu Verenga kurwisa kuti kwokunze uye munyika nemishonga-nemataundi ano kunobva. Kuderedza womukati kurwisa wegadziriro kuti razero hazvibviri. Zvikasadaro, kuti ndingangokuvara bhatiri kuputika chaizvo.

Ndechipi nechinzwano zvokunze nemishonga, iyo inoti mutemo Ohm nokuda kwakakwana cheni? Kana, somuenzaniso, zvakabatana mwenje redunhu, kuti zviri kunze kuramba girobhu racho ichi. The womukati nemishonga nguva dzose anobva bhatiri riri vanowanika mukati hurongwa pachayo. Kana bhatiri chinoshandiswa pachinzvimbo ari electrochemical muchitokisi, murayiro Ohm nokuda redunhu yose anofunga kurwisa pamusoro electrolyte mhinduro uye electrodes. Kana kwokunze nemishonga kuti chikamu yomukati uye chine dunhu yapera, zvino napo pfupi-remudunhu ano Rwako. Ichi kukosha kunonyanyisa pamusoro ano anogona iyerere kuburikidza dunhu iri. Power manyuko mu motokari dzinoratidza tsika ano pfupi-dunhu, rimwe chinouraya dzinonetsa. Nokuti vakachengeteka zvikonzero, zvinoita zvakabatana zvokunze mano, mabhatiri pamwe kurwisa zvakakwana kudzivirira njodzi.

With dzakatevedzana kubatana zvachose womukati kurwisa kwemutariri rinowanikwa nokuwedzera kuti resistances nerimwe magetsi zvinyorwa. In zvinofambirana kubatana zviri voltage mhiri migove mumwe otvetvlonnyh ine ukoshi sezvo magetsi ari unbranched cheni rinowanikwa nokuwedzera kuti variables kuti anoratidza ammeters nomumwe zvikamu zvakabatana muna zvakafanana. Current tsime iri mudunhu mugove haana zvainoita kufanana mugove chokuita nayo.

Where kushandisa mutemo Ohm nokuda kwakakwana cheni? Mostly vari kushandiswa kuverenga kuitika mune Linear magetsi matunhu, DC. Kuti kuita Masvomhu zvakanaka, inofanira kurangarirwa postulates Kihgofa. Chekutanga, nyika algebraic uwandu magetsi mauto ari raiva pedyo nebundu akaenzana razero. Chechipiri, nezvibereko zvomunda algebraic Verengai kuitika simba chero namahwindo loop mapazi uye cheni zvuva zvikamu redunhu anogara akaenzana algebraic Verengai dzakaonekwa voltage mudunhu.

Mumamiriro ezvinhu, sei uye kana mutemo Ohm nokuda kwakakwana cheni wakashamira? mutsvakurudzi Swiss Georg Simon Ohm akasvika ikozvino yakakurumbira munyika fomura empirically. Akadzidza rinobva zviito kuitika uye vaedza siyana emagetsi inoshandiswa kuedza dzavo conductors chainge chakagadzirwa nesimbi dzakasiyana uye alloys. Ohms akatanga yefizikisi kuti vanozvisanangurira zvainoita nemishonga yose kondakita tembiricha. mutemo Ohm nokuda kwakakwana cheni kwave kuzivikanwa masayendisiti kamwe. musayendisiti wokutanga kukoshesa murayiro, vava vaongorori Russian Jacobi uye Lenz. American John. Henry Papera akaenzanisa inoratidza mutemo Ohm nokuda zvakakwana cheni, aine zipi pakati munhu hwasiiwa kwakakwidibira mukamuri, uye muzvinadzidzo wokuGermany E. Lommel akadana nehuro "rakajeka zhenje mumunda magetsi."