Yuav ua li cas yog electromagnetic induction

Electromagnetic induction yog tag nrho cov nyob ib ncig ntawm peb. Txawm nyob rau ntawm lub sij hawm no, thaum koj nyeem cov kab los ntawm lub screen ntawm koj cov ntaus ntawv, tej yam yog nyob rau hauv lub hlwb ntawm lub cev. Txawm li cas los, koj yuav tsum tsis txhob txhawj txog nws, vim hais tias nws siv yog li ntawd me me uas yog tsuas ntawm theoretical kev txaus siab. Txawm li cas los, nyob rau hauv tej yam tej yam kev mob, electromagnetic induction yuav nce mus rau txaus ntshai theem. Nws yog lub npe hu hais tias tib neeg kev ruaj ntseg nyob feem ntau nyob rau hauv nws tus kheej. Yog li ntawd, koj yuav tsum muaj tsawg kawg yog ib tug tswv yim ntawm dab tsi yog qhov electromagnetic induction.

Wb muab ib tug yooj yim kev xav xyaum ua tej yam. Rau no peb yuav tsum tau ib tug nws yog xim hlau nplhaib-hoop, nyob rau hauv uas ib tug kis sensor yog kev cob cog rua nyob rau hauv series ammeter thiab tsis muaj zog filament teeb. Qhov no hoop yuav ua tau ib tug kaw lub voj, los ntawm kev uas yuav ntws lub alternating hluav taws xob tam sim no. Lub nplhaib ntawm nws tus kheej yog raug rho tawm, piv txwv li, yog nestled nyob rau hauv ib lub hnab yas tsho. Qhov thib ob qho tseem ceeb heev lub caij - ib tug ntev hlau los ntawm kev uas ib tug tam sim no ntws. Kev nyuaj siab no yuav tsum tau ntau dua. Muab lub hoop nyob rau hauv ib chav tsev, thiab ib tug hlau - nyob rau hauv lwm yam. Obviously, cov ammeter nyob rau hauv ib tug hlau nplhaib qhia tau hais tias pes tsawg - tseeb, qhov twg yog tam sim no muaj?! Tam sim no muab tso rau lub hlau ncaj qha mus rau lub nplhaib ... Thaum no tus taw tes, yog hais tias tus voltage yog tsis heev me me, lub koob ntawm lub ntaus ntawv lo ntawm xoom. Miracles! Tom qab tag nrho, lub electrons los ntawm cov hlau tej zaum yuav tsis dhia rau lub hlau nplhaib, vim hais tias qhov kawg peb tshwj xeeb taw raug rho tawm uas tsis yog-conductive yas. Peb cov nyom peb xyaum ua tej yam: hlau-mob mus rau lub hoop. Tam sim no xub ammeter kom meej meej qhia hauv lub xub ntiag ntawm ib lub nplhaib ntawm hluav taws xob tam sim no. Yog vim li cas rau qhov no - electromagnetic induction. Yuav kom piav qhia txog dab tsi tshwm sim los ntawm ib tug scientific point of view, nws yog tsim nyog los ua ib tug me me excursion mus rau hauv keeb kwm.

Tus foundations ntawm electromagnetic induction nyob rau hauv 1831 yog ntaus nqi mus rau Michael Faraday. Kaum xyoo ua ntej ntawd, nws teem tawm mus hloov lub magnetic teb mus rau hauv hluav taws xob lub zog thiab, raws li tau pom, brilliantly coped nrog qhov no. Twb nyob rau ntawm lub sij hawm, physicists paub hais tias muaj ob hom ntawm teb - magnetic thiab hluav taws xob. Yog hais tias them nyiaj nqa yeej, cov kaw tseg teb ib tug sib nqus xwm, thiab yog hais tias tsis tshais, lub electrostatic. Muaj coob tus neeg lam xav hais tias lub teb yuav tsum tau sov ua licas txuas, tab sis kev pom zoo no thiab nws txoj kev kawm ua raws nraim Faraday. Nws tsiv sab kauj nyob rau hauv lub loj. Lus xaus ntawm ib tug ntawm lawv raug kev cob cog rua rau lub xab ntaus ntawv, thiab nyob rau lwm yam coils ntws ib qhov tam sim no. Cov tshwm sim ntawm particle tsab ntawv tsa suab nyob rau hauv ib tug Circuit Court hu ua ntxias (hob) tam sim no. Yog hais tias hais muaj directionally tsiv xwb, nyob ib ncig ntawm uas muaj ib tug sib nqus teb. Uas muaj yog induction kab ntawm lub teb lub dag lub zog mus hla lub conductive Circuit Court. Nws tau tsiv mus nyob nws tus kheej lub voj, thiab teb - cov no yog tib yam. Muab los ntawm ncaj qha tam sim no (Faraday txoj kev) rau alternating txhob tej cov neeg kho tshuab displacements, raws li generated los ntawm lub teb nws tus kheej mas nws txawv nrog lub sij hawm. Kev siv ntawm electromagnetic induction transformers tau los mus tsim hluav taws xob lub zog. Tej zaum qhov hluav taws xob yuav tsis tau mus txog lub heights ntawm niaj hnub no, tsis txhob yuav xws li.

Yuav ua li cas yog cov kev txaus ntshai rau tib neeg? Ib txhia hwj chim kav kab qhia txhiab ntawm volts. Vim hais tias ntawm no, uas twb muaj lawm daim teb nyob ib ncig ntawm cov nyob ntawm tej tej zaum yuav cuag mus rau ob peb meters. Tus txiv neej ntes tau nyob rau hauv ib tug nce mus nce los teb, lub dej lwg me me yog taw qhia kom paub nrog cov kab ntawm nro. Heev raug rau cov tej yam kev mob adversely muaj feem xyuam rau ntau lub cev.