MapangidweSayansi

Lamulo Ohm kwa unyolo wathunthu

lamulo Ohm ndi imodzi mwa mfundo zofunika sayansi. Chilinganizo ambiri kuti umakhala akuluakulu wathunthu, ndi malo ake, ananena kuti mphamvu panopa ali wofanana ndi quotient akamagwira kugawa mtengo wa kufotokoza volts, ndi phindu lomwe akufotokoza mphamvu ya masiku ano amperes. kudalira Izi zikusonyeza kuti kuchepetsa kukana mphamvu ya ukuwonjezeka panopa. Funso ndi lakuti: kodi n'zotheka kuti kwambiri panopa, kuchepetsa kukana kuti zikande? Khalani limasonyeza kuti zimenezi n'zosatheka. lamulo Ohm kwa dera okwana limasonyeza kuti voteji ayenera kugawidwa ndi onse, pamodzi kulimbikira mtunda ngati Uwerenge kukana wa kunja ndi mkati gwero panopa kukana amadalira. Kuchepetsa kukana mkati mwa dongosolo kuti ziro sizingatheke. Apo ayi, Mwina batire kuphulika ndi mkulu.

ndi mkati ndi kunja kukana, lomwe limati malamulo Ohm kwa unyolo wathunthu chiyani? Mwachitsanzo, chikugwirizana dera nyali, kuti akukana kunja kwa babu izi. Kulimbikira mkati nthawizonse amabwera kwa batire amene kwaiye mwa dongosolo yokha. Ngati batire ntchito m'malo mwa selo electrochemical, lamulo Ohm kwa dera lonse amaganizira kukana wa njira electrolyte ndi maelekitirodi lapansi. Ngati kukana kunja timene mkati ndi momwe dera chatsekedwa, ndiye ndi mwachangu-dera panopa utuluke. Izi mtengo pazipita panopa kuti akhoza ikuyenda mwa dera lino. magwero mphamvu magalimoto kusonyeza khalidwe panopa yochepa dera yovuta moyo pachiswe. Zifukwa chitetezo, izo chikugwirizana zipangizo kunja, mabatire ndi kukana zokwanira kuteteza tsoka.

Ndi mndandanda kugwirizana okwana mkati kulimbikira dera ndi masamu ndi kuwonjezera resistances aliyense magwero pano. Mogwirizana yomweyi voteji kudutsa aliyense mbali otvetvlonnyh ali phindu mofanana pano mu unyolo unbranched kuchita masamu ndi kuwonjezera zosintha zomwe zikuonetsa ammeters lililonse zigawo olumikizidwa ku kufanana. gwero Current ili pa dera gawo alibe mphamvu pa gawo kufanana olumikizidwa kwa izo.

Kodi kutsatira lamulo Ohm kwa unyolo wathunthu? Makamaka iwo ntchito kuwerengera masiku ano liniya madera magetsi, DC. Kuchita kuwerengetsera bwino, tiyenera kukumbukira postulates Kihgofa. Choyamba, ndalama algebraic a magulu panopa pa mfundo ndi wofanana ndi ziro. Chachiwiri, mankhwala Uwerenge algebraic wa mphamvu ziliri pa kuzungulira kulikonse chatsekedwa nthambi unyolo ndi kuukoka zigawo dera nthawi zonse wofanana ndi ndalama algebraic wa voteji wapezeka mu dera la.

Zinthu zinali bwanji ndi pamene lamulo Ohm kwa unyolo wathunthu chatsegulidwa? Swiss kafukufuku Georg Simon Ohm anafika tsopano wotchuka padziko chilinganizo dziko empirically. Anaphunzira kanthu maginito ya panopa ndi ayesa magudumu zosiyanasiyana ntchito mu zatsopano awo ochititsa zitsulo zosiyana siyana ndi kasakaniza wazitsulo. Ohms anali woyamba wa sayansi kuti amalembedwa zimakhudzanso kulimbikira kwa wochititsa kutentha. lamulo Ohm kwa unyolo wathunthu wakhala anazindikira ndi anthu sayansi kamodzi. Wasayansi woyamba kuzindikira malamulo, akhala ofufuza Russian Jacobi ndi Lenz. American John. Henry kenako poyerekeza chilinganizo kufotokoza chilamulo Ohm kwa unyolo wathunthu, ndi zipper pakati pa anathawira chipinda wachisoni, ndi pulofesa German E. Lommel otchedwa kutsegula "muuni wowala m'munda wa magetsi."

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