Magnetic flux

Siv fais fab tuag lawm, tsis muaj peev xwm qhia cov kev taw qhia ntawm cov magnetic teb, tab sis kuj yuav tuab lub qhov ntau ntawm nws cov induction.

Peb cov txheej txheem mus nqa tawm cov kab ntawm kev quab yuam li hais tias los ntawm 1 cm² cheeb tsam perpendicular induction vector ntawm ib tug taw tes, cov xov tooj ntawm cov kab nyob sib npaug zos teb lub dag lub zog ntawm tus taw tes.

Nyob rau hauv qhov chaw nyob qhov twg lub teb lub dag lub zog yuav tsum ntau, lub teb kab no thicker. Conversely, qhov twg lub teb lub zog yog tsawg thiab tsawg zog kab.

Yog li, cov kev ceev ntawm lub magnetic teb kab raug kev txiav txim nyob rau hauv nws cov induction vector magnitude thiab cov kev taw qhia ntawm cov kab ntawm kev quab yuam - ntawm cov kev taw qhia ntawm cov vector.

Kev soj xyuas tus ncaj tam sim no magnetic spectra coils ntawd hais tias qhov kev tshem tawm ntawm tus neeg xyuas pib sib nqus teb decreases, tshaj tej ntawm, sai sai heev.

Ib tug sib nqus teb nrog induction teej ntawm txawv cov ntsiab lus hu ua heterogeneous. Teb yog ib tug nonuniform teb yog rectilinear thiab yeej tam sim no teb sab nraum lub solenoid, lub teb ntawm mus tas li magnet , etc.

Lub magnetic teb yog tib yam rau tag nrho cov ntsiab lus ntawm induction yog homogeneous teb. Graphically homogeneous magnetic teb sawv cev los ntawm teb kab uas sawv cev rau kev vaj huam sib spaced thaum uas tig mus kab.

Ib qho piv txwv ntawm ib tug niaj hnub teb yog lub teb los mus rau hauv ntawm ib tug ntev kauj, raws li zoo raws li lub teb ntawm lub zoo-spaced thaum uas tig mus planar ncej ntsej muag ntawm lub electromagnet.

Cov khoom ntawm lub magnetic teb tob tob active Circuit Court nyob rau hauv Circuit Court cheeb tsam yog hu ua tus nqus flux ntawm lub magnetic induction los yog tsuas yog sib nqus flux.

Kev Txiav Txim muab nws thiab kawm lub zog ntawm cov lus Askiv physicist - Faraday. Nws tshwm sim hais tias cov tswvyim no yuav ua rau nws tau mus ntxiv xav txog lub unified xwm ntawm lub magnetic thiab hluav taws xob tshwm sim.

Denoting lub magnetic flux los ntawm tsab ntawv F, lub contour cheeb tsam S thiab lub kaum sab xis ntawm cov kev taw qhia ntawm cov vector ntawm induction B thiab lub cev n mus rau lub voj cheeb tsam α, lub nram qab no kab zauv yuav sau:

F = B S cos α.

Sib Nqus flux - yog ib tug scalar kom muaj nuj nqis.

Txij li thaum lub ceev ntawm kev quab yuam kab ntawm arbitrary magnetic teb sib npaug nws induction, sib nqus flux sib npaug zos rau tag nrho cov xov tooj ntawm cov kab ntawm kev quab yuam uas txeem lub active Circuit Court.

Nrog rau cov kev hloov nyob rau hauv lub teb thiab hloov cov magnetic flux uas penetrates rau hauv Circuit Court: lub amplification teb nws tsub kom thaum loosening - decreases.

Lub tsev ntawm magnetic flux nyob rau hauv lub SI tau txais kwj uas penetrates ib cheeb tsam ntawm 1 m² thiab ua nyob rau hauv ib tug homogeneous magnetic teb nrog induction of 1 Wb / m², thiab yog perpendicular mus rau lub vector ntawm induction. Xws li ib tug unit yog hu ua Weber

1 Wb = 1 Wb / m² ˖ 1 m².

Hloov nws cov magnetic flux generates ib tug hluav taws xob field muaj kab ntawm kev quab yuam raug kaw (vortex hluav taws xob field). Daim teb no zoo nkaus li nyob rau hauv lub qhov rais Explorer li ib tug kev txiav txim ntawm txawv teb chaws rog. Qhov no tshwm sim yog hu ua electromagnetic induction, thiab cov electromotive quab yuam generated nyob rau tib lub sij hawm - EMF induction.

Tsis tas li ntawd, nws yuav tsum tau muab sau tseg hais tias ib tug sib nqus flux ua rau nws ua tau rau tuab lub zuag qhia tag nrho tag nrho magnet (los yog lwm yam los ntawm cov magnetic teb). Yog li ntawd, yog hais tias tus magnetic flux ceev ua rau nws ua tau rau tuab nws cov nyhuv ntawm ib tug taw tes, lub magnetic flux - raws li ib tug tag nrho. Xws li, nws yuav tau hais tias qhov no yog tus thib ob feem ntau tseem ceeb cov yam ntxwv ntawm ib tug sib nqus teb. Li no, yog hais tias tus magnetic flux ceev ua raws li lub hwj chim cov yam ntxwv ntawm lub magnetic teb, lub sib nqus flux - yog nws lub zog yam ntxwv.

Rov qab mus rau cov kev kawm txawj, peb yuav tau hais tias txhua txhua lem ntawm lub kauj yuav imagined li ib tug nyias noj ib vicious tig. Cov tib Circuit Court, los ntawm kev uas yuav kis tau tus magnetic flux ntawm lub magnetic induction. Nyob rau hauv xws li ib tug cov ntaub ntawv yuav tsum khij induction hluav taws xob tam sim no. Yog li, nws yog nyob rau hauv tus ntawm magnetic flux generated fais teb nyob rau hauv lub kaw neeg xyuas pib. Thiab ces mus rau qhov no hluav taws xob field generates ib tug hluav taws xob tam sim no.