Ike Electromotive nke E tinyere n'ọrụ (EMF)
Ike eletriki nke a na-akpali akpali (EMF) bụ ihe na-eme ka e nwee ike eletrik ma ọ bụ ike eletriki n'ime ihe na-eduzi eletriki n'ihi mgbanwe nke ike magnet na-agafe na ya. Michael Faraday bu ụzọ webata echiche a na 1831 site na usoro nnwale ndị na-egosi na ike magnet nke na-agbanwe agbanwe nwere ike imepụta ọkụ eletrik n'ime ihe na-eduzi. Nchọpụta a kpalitere mgbanwe na physics na injinia, karịsịa na mmepe nke ihe na-emepụta ọkụ eletrik, ihe na-agbanwe agbanwe, na ngwaọrụ eletriki ndị ọzọ dị iche iche.
Ụkpụrụ ndị bụ isi nke emf e tinyere n'ime akpalite
Iji ghọta isi ihe dị mkpa nke EMF e tinyere n'ime ya, anyị ga-ezo aka n'iwu Faraday nke induction electromagnetic. Iwu a na-ekwu na "Ike electromotive nke e tinyere n'ime sekit kwekọrọ na ọnụego mgbanwe nke flux magnet site na sekit ahụ." N'ikwu ya n'ụzọ ọzọ, mgbe enwere mgbanwe na ubi magnet nke na-agafe na onye na-eduzi ya, ọ ga-emepụta voltaji eletrik na onye na-eduzi ya.
Enwere ike ide usoro mgbakọ na mwepụ nke iwu Faraday dị ka ndị a:
\[ \mathcal {E} = – \frac{d\Phi_B}{dt} \]
Ebe:
– \(\mathcal{E}\) bụ EMF (Volts) e tinyere n'ime ya
– \(\Phi_B\) bụ mgbanwe magnet (Weber)
– \(\frac{d\Phi_B}{dt}\) bụ ọnụego mgbanwe nke mmiri ndọta magnetik
Ihe ịrịba ama na-adịghị mma dị na usoro ahụ na-anọchite anya iwu Lenz, nke na-ekwu na ntụziaka nke EMF a kpalitere ga-adị iche na mgbanwe nke mmiri magnet nke kpatara ya. Nke a bụ ụkpụrụ nke nchekwa ike nke e kwuru n'ihe gbasara electromagnetism.
Ihe Ndị Na-emetụta EMF E tinyere n'ọrụ
1. Ọsọ nke Mgbanwe nke Ọdụ Magnetik
Otu n'ime ihe ndị bụ isi na-emetụta oke EMF a na-akpali bụ mgbanwe nke magnetic field. Ka magnetic field na-agbanwe ngwa ngwa, otú ahụ ka EMF a na-akpali si eme. Nke a pụtara na ngwaọrụ na-arụ ọrụ na magnetic field frequency ga-emepụta EMF ka ukwuu karịa ngwaọrụ na-arụ ọrụ na frequency dị nwayọ.
2. Ọnụọgụ nke ntụgharị waya
Ọnụọgụ nke ntụgharị waya dị na kọlụm na-emetụtakwa EMF nke e tinyere n'ime eriri igwe nke ukwuu. Ọ bụrụ na ị jiri okpukpu abụọ nke ọnụọgụ nke ntụgharị waya ahụ, ị ga-eji okpukpu abụọ nke EMF nke e tinyere n'ime eriri igwe ahụ, n'ihi na ntụgharị ọ bụla na-enye ego ọzọ na voltaji niile e mepụtara.
3. Mpaghara nkebi nke eriri
Mpaghara akụkụ nke eriri igwe e kpugheere n'ọhịa magnet na-emetụtakwa oke nke EMF e tinyere n'ime ya. Ka mpaghara akụkụ ahụ buru ibu, otú ahụ ka mmiri magnet nwere ike ịgafe na eriri igwe ahụ, nke a ga-emekwa ka EMF e tinyere n'ime ya dịkwuo elu.
4. Ike nke Ọgbọ Magnetik
Ike nke ebe ndọta ahụ n'onwe ya nwekwara mmetụta dị ukwuu. Ebe ndọta siri ike ga-emepụta mgbanwe ka ukwuu na mmiri ndọta ahụ, ya mere EMF dị elu.
Ngwa nke EMF Induced na Ndụ Kwa Ụbọchị
1. Jenerato Eletriki
A na-ejikarị ụkpụrụ nke induced emf eme ihe n'ime jenereta eletriki. N'ime jenereta, magnetic field na-agbagharị gburugburu waya, ma ọ bụ connection nke waya na-agbagharị n'ime magnet. Mgbanwe a na-eme ka mgbanwe na-aga n'ihu na magnetik flux site na coil, si otú a na-emepụta emf induced nke enwere ike ịgbanwe ka ọ bụrụ eletrik maka ebumnuche dị iche iche.
2. Ngbanwe
Transformer bụ ngwaọrụ eji eme ka voltaji dịkwuo elu ma ọ bụ belata na netwọk nkesa eletriki. Transformers na-arụ ọrụ na ụkpụrụ nke induced emf, ebe ọkụ eletrik na-agbanwe agbanwe na coil mbụ na-emepụta oghere magnet na-agbanwe agbanwe, nke na-akpali voltaji na coil nke abụọ.
3. Ebe a na-etinye ihe n'ime ọkụ
N'elu ihe esi nri induction, a na-eji ụkpụrụ nke induction emf eme ka ite na ite kpoo ọkụ ozugbo. Ọkụ eletrik na-agbanwe agbanwe na-agafe na coil dị n'okpuru ihe esi nri, na-emepụta oghere magnetik na-agbanwe agbanwe. Ọkụ magnetik a na-akpali ọkụ eletrik n'ime ite ma ọ bụ ite ejiri ihe ferromagnetic mee, na-emepụta okpomọkụ maka isi nri.
4. Ngwa eletrọniki ndị ọzọ
A na-etinyekwa emf induced n'ọtụtụ ngwaọrụ eletrọniki ndị ọzọ dị ka igwe okwu na-agbanwe agbanwe, igwe okwu na ihe mmetụta magnetik. Dịka ọmụmaatụ, igwe okwu na-agbanwe ebili mmiri ụda ka ọ bụrụ akara eletriki site na ịgbanwe oghere magnetik nke na-akpali emf n'ime eriri waya.
Nnwale Dị Mfe Iji Hụ EMF E Ji Kpalite
Ihe na ngwaọrụ
1. Okporo waya (ọtụtụ ntụgharị)
2. Magnet mmanya
3. Galvanometer ma ọ bụ voltmeter nwere mmetụta uche
Usoro
1. Jikọọ nsọtụ nke eriri waya ahụ na galvanometer ma ọ bụ voltmeter.
2. Mee ka magnet mmanya ahụ dị nso na eriri waya ahụ ma hụ mgbanwe dị na galvanometer ahụ.
3. Bugharịa magnet mmanya ahụ ngwa ngwa gaa ma pụọ na eriri waya ahụ wee hụ mgbanwe dị na galvanometer ahụ.
N'ime nnwale a, ị ga-achọpụta na oge ọ bụla e bugharịrị magnet mmanya ahụ, agịga galvanometer na-egosi voltaji e tinyere n'ime ya. Nke a na-egosi na mpaghara magnet na-agbanwe agbanwe gburugburu eriri waya ahụ na-emepụta EMF e tinyere n'ime ya.
Mmechi
Emf a na-akpali akpali bụ ihe dị mkpa na physics na electromagnetism nke emeela ka e nwee ọtụtụ ihe ọhụrụ na teknụzụ. Isi ihe dị mkpa nke emf a na-akpali akpali bụ na mgbanwe magnetik nwere ike imepụta voltaji eletriki na onye na-eduzi ya. Ihe ndị dị ka ọnụego mgbanwe nke magnetik, ọnụọgụ nke ntụgharị waya, mpaghara obe nke coil, na ike nke magnetik niile na-emetụta oke nke emf a na-akpali akpali.
Enwere ike ịchọta ojiji bara uru nke EMF e tinyere n'ime ihe eji emepụta ọkụ eletrik, transformers, induction brewers, na ngwaọrụ eletrọniki dị iche iche. Ịghọta na itinye ụkpụrụ nke EMF e tinyere n'ime ihe n'ọrụ abụghị naanị na ọ na-eme ka sayensị baa ọgaranya kamakwa ọ na-akwalite mmepe teknụzụ nke na-eme ka ndụ kwa ụbọchị dị mfe.
Site n'ịghọta ụkpụrụ na ojiji nke EMF e tinyere n'ọrụ, anyị agaghị enwe ike ịghọta ọganihu teknụzụ dị ugbu a kamakwa anyị ga-enye aka na mmepe nke ihe ọhụrụ ndị ọzọ n'ọdịnihu.
