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Wutar Lantarki

Kalkuleta na Dokar Ohm

Warware duk wani canji na dokar Ohm — ƙarfin lantarki, wutar lantarki, juriya, ko wutar lantarki — daga sauran biyun, tare da nuna wutar lantarki tare da wutar lantarki.

Ƙara zuwa wurin aiki

Ƙimomin shigarwa

Lakabin shigarwa guda biyu suna canzawa tare da wanda ba a sani ba. Sakamakon yana sabuntawa yayin da kake rubutu. Duk lissafin suna gudana a cikin gida a cikin burauzarka.

Wutar Lantarki

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Wuta: —Duba: —

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Ƙa’ida

V = I × R, da P = V × I. Daga waɗannan biyun, kowane nau'i yana biye da: I = V ÷ R, R = V ÷ I, P = I² × R, P = V² ÷ R. Guntun "Duba" yana sake lissafin ƙimar da aka warware ta hanyar ɗayan alaƙa don tabbatar da daidaito.

Misalin aiki

Warware don halin yanzu tare da V = 12 V da R = 4 Ω: I = V ÷ R = 12 ÷ 4 = 3.00 A. Ƙarfi = V × I = 12 × 3 = 36.00 W. Duba ta ɗayan fom ɗin: P = V² ÷ R = 144 ÷ 4 = 36.00 W — daidaito. gaba ɗaya

Amfani da iyakoki

Wannan DC ne kuma mai juriya AC: yana ɗauka cewa ƙarfin lantarki da halin yanzu suna cikin lokaci kuma juriya tana dawwama. Ba ya rufe da'irori masu amsawa AC (inductors, capacitors, phase change) ko juriya da ta dogara da zafin jiki - juriyar fitilar filament tana ƙaruwa sosai yayin da take zafi, don haka juriyar sanyi tana ba da wutar lantarki mai ɓatarwa. Sifili juriya yana nufin gajeren da'ira: halin yanzu ba shi da iyaka a cikin samfurin da ya dace, don haka shafin yana ƙin rabawa da sifili maimakon nuna rashin iyaka. Da'irori na gaske koyaushe suna da wasu juriya da wadata tare da iyaka ta yanzu.

Sigar tsari: 7b0965da4757 · An duba misali:

FAQ

Waɗanne ƙima biyu nake buƙata?

Duk wani biyu na ƙarfin lantarki, halin yanzu, da juriya yana ƙayyade na uku - kuma iko yana biyo baya daga kowane nau'in wutar lantarki. Zaɓi wanda ba a sani ba a sama kuma shigar da biyun da kuka sani.

Me yasa shafin yake ƙin juriya sifili?

Domin I = V ÷ R tare da R = 0 gajeren da'ira ne: samfurin da ya dace yana annabta halin yanzu mara iyaka. Kayayyakin da ake buƙata na gaske suna iyakance wutar lantarki ko kuma sun gaza; babu wata amsa mai iyaka, don haka shafin ya faɗi haka.

Shin wannan yana aiki ga manyan hanyoyin AC?

Don nauyin juriya (masu dumama, fitilun incandescent) eh, ta amfani da ƙarfin lantarki na RMS da na yanzu. Ga injina da na'urorin lantarki masu inductance ko capacitance, yi amfani da lissafin impedance da kuma waɗanda ke da masaniya kan lokaci.

Menene gargaɗin ƙimar wutar lantarki game da shi?

Resistor yana canza wutar lantarki zuwa zafi. Sakamakon 36 W ta hanyar resistor na 0.25 W zai lalata shi - koyaushe duba ƙimar ƙarfin bangaren akan ƙarfin da aka ƙididdige, ba kawai ƙimar juriya ba.

Volts, amps, ohms - wane sikelin naúrar?

Raka'o'in tushe SI a nan: volts, amps, ohms, watts. Ga milliamps, raba da 1,000 da farko (500 mA = 0.5 A); ga kilohms, ninka da 1,000 (4.7 kΩ = 4700 Ω).

Zan iya warware wutar lantarki kai tsaye?

Eh: zaɓi Wuta kuma a shigar da ƙarfin lantarki da halin yanzu. Shafin kuma yana nuna juriyar da aka nuna (V ÷ I) a matsayin ƙimar duba.

Kayan aiki masu alaƙa

Sakamako kimantawa ne kawai kuma ba ya nufin shawarar ƙwararru.