Ƙarfin Wutar Lantarki Mai Induced (EMF)
Ƙarfin lantarki mai haifar da wutar lantarki (EMF) wani lamari ne da ke tattare da samar da wutar lantarki ko ƙarfin lantarki a cikin na'urar lantarki saboda canjin filin maganadisu da ke ratsa ta. Michael Faraday ne ya fara gabatar da wannan ra'ayi a shekarar 1831 ta hanyar gwaje-gwaje da suka nuna cewa canjin filin maganadisu na iya samar da wutar lantarki a cikin na'urar lantarki. Wannan gano ya haifar da juyin juya hali a fannin kimiyyar lissafi da injiniyanci, musamman a cikin haɓaka janareto na lantarki, na'urorin canza wutar lantarki, da sauran na'urori daban-daban na lantarki.
Ka'idojin asali na emf da aka haifar
Domin fahimtar ƙa'idar asali ta EMF da aka haifar, dole ne mu koma ga dokar Faraday ta hanyar amfani da na'urar lantarki. Wannan doka ta bayyana cewa "Ƙarfin lantarki da aka haifar a cikin da'ira yana daidai da saurin canjin kwararar maganadisu ta cikin da'irar." A wata ma'anar, idan akwai canji a filin maganadisu da ke wucewa ta cikin na'urar lantarki, zai samar da wutar lantarki a cikin na'urar.
Za a iya rubuta dabarar lissafi ta dokar Faraday kamar haka:
\[ \mathcal {E} = - \frac{d\Phi_B}{dt} \]
Ina:
– \(\mathcal{E}\) shine EMF da aka haifar (Volts)
– \(\Phi_B\) shine kwararar maganadisu (Weber)
– \(\frac{d\Phi_B}{dt}\) shine saurin canjin kwararar maganadisu
Alamar da ba ta da kyau a cikin dabarar tana wakiltar dokar Lenz, wadda ke nuna cewa alkiblar EMF da aka haifar zai kasance akasin canjin kwararar maganadisu da ya haifar da shi. Wannan shine ka'idar kiyaye makamashi da aka bayyana a cikin mahallin electromagnetism.
Abubuwan da ke Shafar EMF da aka haifar
1. Saurin Canjin Filin Magnetic
Ɗaya daga cikin manyan abubuwan da ke shafar girman EMF da aka haifar shine saurin canjin filin maganadisu. Da sauri canjin filin maganadisu, haka nan EMF da aka haifar zai fi girma. Wannan yana nufin cewa na'urar da ke aiki a babban mitar filin maganadisu za ta samar da EMF mafi girma fiye da na'urar da ke aiki a hankali.
2. Yawan juyawar waya
Adadin juyawar waya a cikin na'ura yana kuma shafar EMF da aka haifar sosai. Idan ka ninka adadin juyawar waya sau biyu, za ka ninka EMF da aka haifar sau biyu, domin kowace juyawa tana ba da ƙarin adadin ga jimlar ƙarfin lantarki da aka samar.
3. Yankin giciye na na'ura
Yankin giciye na na'urar da aka fallasa ga filin maganadisu shi ma yana shafar girman EMF da aka haifar. Girman yankin giciye, yawan kwararar maganadisu na iya wucewa ta na'urar, kuma wannan zai ƙara EMF da aka haifar.
4. Ƙarfin Filin Magnetic
Ƙarfin filin maganadisu da kansa yana da tasiri mai mahimmanci. Ƙarfin filin maganadisu zai haifar da babban canji a cikin kwararar maganadisu, don haka EMF mafi girma.
Amfani da EMF da aka haifar a Rayuwar Yau da Kullum
1. Janareta Mai Lantarki
Ana amfani da ƙa'idar emf da aka haifar sosai a cikin janareto na lantarki. A cikin janareto, filin maganadisu yana juyawa a kusa da na'urar waya, ko kuma na'urar waya tana juyawa a cikin filin maganadisu. Wannan juyawa yana haifar da canji akai-akai a cikin kwararar maganadisu ta cikin na'urar, don haka yana samar da emf da aka haifar wanda za'a iya mayar da shi wutar lantarki don dalilai daban-daban.
2. Mai Canjawa
Na'urar canza wutar lantarki (transformer) na'ura ce da ake amfani da ita don ƙara ko rage ƙarfin lantarki a cikin hanyar sadarwa ta rarraba wutar lantarki. Na'urorin canza wutar lantarki suna aiki ne bisa ƙa'idar emf da aka haifar, inda canjin wutar lantarki a cikin na'urar farko ke samar da canjin filin maganadisu, wanda ke haifar da ƙarfin lantarki a cikin na'urar ta biyu.
3. Murhun Induction
A cikin girkin induction, ana amfani da ƙa'idar induction emf don dumama tukwane da kasko kai tsaye. Wutar lantarki mai canzawa tana gudana ta cikin na'urar da ke ƙarƙashin saman girki, tana ƙirƙirar filin maganadisu mai canzawa. Wannan filin maganadisu yana haifar da wutar lantarki a cikin tukunya ko kasko da aka yi da kayan ferromagnetic, yana samar da zafi don girki.
4. Sauran Kayan Lantarki
Ana amfani da emf mai haifar da wutar lantarki a wasu na'urorin lantarki daban-daban kamar makirufo masu motsi, lasifika, da na'urori masu auna maganadisu. Misali, makirufo mai motsi yana canza raƙuman sauti zuwa siginar lantarki ta hanyar canza filayen maganadisu waɗanda ke haifar da emf a cikin na'urar haɗi ta waya.
Gwaji Mai Sauƙi Don Lura da EMF da Aka Jawo
Kayan aiki da kayan aiki
1. Na'urar waya (juyawa da yawa)
2. Magnet ɗin mashaya
3. Na'urar auna ƙarfin lantarki ko na'urar auna ƙarfin lantarki mai hankali
Tsarin aiki
1. Haɗa ƙarshen na'urar wayar zuwa na'urar auna galvanometer ko voltmeter.
2. Ku zo da maganadisu na sandar kusa da na'urar da ke kan waya sannan ku lura da canje-canjen da ke cikin na'urar auna galvanometer.
3. Matsar da maganadisu na sandar da sauri zuwa da kuma nesa da na'urar wayar sannan ka lura da canje-canje a cikin na'urar auna galvanometer.
A cikin wannan gwajin, za ku lura cewa duk lokacin da aka motsa maganadisu na sandar, allurar galvanometer tana nuna ƙarfin lantarki da aka haifar. Wannan yana nuna cewa canjin filin maganadisu da ke kewaye da na'urar zare yana haifar da EMF da aka haifar.
Kammalawa
Emf da aka haifar wani muhimmin abu ne a fannin kimiyyar lissafi da kuma electromagnetism wanda ya share fagen sabbin fasahohi daban-daban. Babban ka'idar emf da aka haifar ita ce canjin filin maganadisu na iya samar da wutar lantarki a cikin na'urar jagora. Abubuwa kamar saurin canjin filin maganadisu, adadin juyawar waya, yankin giciye na na'urar, da kuma ƙarfin filin maganadisu duk suna tasiri ga girman emf da aka haifar.
Ana iya samun aikace-aikacen EMF da aka haifar a cikin janareto na lantarki, na'urorin canza wutar lantarki, na'urorin dafa abinci na induction, da sauran na'urori daban-daban na lantarki. Fahimtar da amfani da ƙa'idodin EMF da aka haifar ba wai kawai yana wadatar da kimiyya ba har ma yana haifar da ci gaban fasaha wanda ke sauƙaƙa rayuwar yau da kullun.
Ta hanyar fahimtar ƙa'idodi da aikace-aikacen EMF da aka haifar, ba wai kawai za mu iya godiya da ci gaban fasaha na yanzu ba, har ma za mu ba da gudummawa ga ci gaban ƙarin sabbin abubuwa a nan gaba.
