Kev sib nqus induction - teeb meem thiab kev daws teeb meem
1. Cov yam hauv qab no cuam tshuam rau qhov sib nqus induction ntawm tus neeg xyuas hlau.
(1) qhov tam sim no ntws hauv cov hlau
(2) kev tso cai
(4) qhov deb ntawm ib qho taw tes ntawm cov xov hlau
Cov lus hais twg yog qhov tseeb
Tshuaj:
Cov qauv ntawm kev sib nqus induction ntawm ib txoj hlau:
μ o = Permeability ntawm lub tshuab nqus tsev lossis lub zog sib nqus tas li
Kuv = Hluav taws xob tam sim no ntws rau ntawm cov hlau
r = qhov deb ntawm ib qho taw tes los ntawm cov hlau
B = qhov loj ntawm kev sib nqus induction
2. Nco ntsoov cov lus hais txog qhov kev sib nqus induction hauv qab no.
(1) qhov tam sim no ntws hauv cov hlau
(2) qhov permeability ntawm lub tshuab nqus tsev
(3) thaj tsam ntawm txoj hlua hlau
(4) qhov ceev ntawm cov hlau
Dab tsi cuam tshuam rau qhov ntau ntawm magnetic induction ntawm tus neeg xyuas hlau.
tshuaj
Kawm cov qauv ntawm magnetic induction thiab cov lus piav qhia ua ntej.
3. Cov hluav taws xob tam sim no kuv ntws rau ntawm tus xov hlau conductor. Qhov magnetic induction ntawm qhov chaw ntawm lub voj voog (P) yog dab tsi ? (µ o = 4π.10 -7 Wb.m -1 .A -1 )
Paub:
Lub voj voog voj voog (r) = 6 cm = 6 x 10-2 meters
Tam sim no hluav taws xob (I) = 8 Ampere
Kev nkag tau ntawm lub tshuab nqus tsev (µo ) = 4π x 10 -7 Wb.A -1 m -1
Xav tau: qhov sib nqus induction ntawm qhov chaw ntawm lub voj voog (P)
Tshuaj:
360 o – 90 o = 270 o . 270 o / 360 o = 3/4 ces 270 o = 3/4 ncig
Cov mis ntawm lub teb sib nqus ntawm qhov chaw ntawm lub kauj nrog ntau lub voj voog:
B = lub zog sib nqus, N = tus naj npawb ntawm cov windings, I = tam sim no hluav taws xob, r = radius ntawm curvature
Hauv qhov teeb meem saum toj no, tsuas muaj ib qho winding xwb kom N raug tshem tawm ntawm qhov sib npaug. Lub kauj hlau ntawm qhov teeb meem saum toj no tsis yog 1 lub voj voog tab sis 3/4 lub voj voog. Cov mis saum toj no raug kho dua nrog qhov teeb meem no:
Lub magnetic induction ntawm qhov chaw ntawm lub voj voog:
4. Tam sim no 2 A ntws rau ntawm ib txoj hlau voj voog zoo li daim duab. Qhov loj thiab kev coj ntawm kev sib nqus induction ntawm qhov chaw P yog dab tsi yog tias lub vojvoog ntawm lub voj voog 4π cm.
Paub:
Lub vojvoog (r) = 4π cm = 4π x 10-2 meters
Tam sim no hluav taws xob (I) = 2 Ampere
Kev nkag tau ntawm lub tshuab nqus tsev (µo ) = 4π x 10 -7 Wb.A -1 m -1
Xav tau: Qhov loj thiab kev coj ntawm kev sib nqus induction ntawm qhov chaw P
Tshuaj:
Cov xov hlau kauj ntawm qhov teeb meem saum toj no yog 1/2 lub voj voog.
Qhov loj ntawm kev sib nqus induction ntawm qhov point P:
20 cov lus nug thiab lus teb txog kev sib nqus induction:
1. Lo lus nug: Kev sib nqus induction yog dab tsi?
Lus Teb: Kev sib nqus induction, lossis magnetic flux density, yog kev ntsuas ntawm qhov concentration ntawm cov kab magnetic field hauv ib cheeb tsam. Nws sawv cev los ntawm lub cim B thiab muaj cov units ntawm Tesla (T).
2. Lo lus nug: Kev sib nqus induction muaj feem cuam tshuam li cas rau lub magnetic teb?
Lus Teb: Kev sib nqus induction yog qhov kev sawv cev ntawm lub zog sib nqus, qhia nws lub zog thiab kev coj ntawm txhua qhov chaw hauv qhov chaw.
3. Lo lus nug: Faraday txoj cai ntawm electromagnetic induction yog dab tsi?
Lus Teb: Faraday txoj cai hais tias lub zog electromotive (EMF) uas tshwm sim hauv txhua lub voj voog kaw yog sib npaug rau qhov tsis zoo ntawm kev hloov pauv ntawm cov hlau nplaum sib nqus los ntawm lub voj voog.
4. Lo lus nug: Qhov kev taw qhia ntawm lub kauj cuam tshuam li cas rau qhov kev sib nqus induction uas nws tau ntsib?
Lus Teb: Qhov kev sib nqus induction uas lub kauj ntsib yog qhov siab tshaj plaws thaum lub dav hlau ntawm lub kauj yog perpendicular rau lub teb sib nqus thiab qhov tsawg kawg nkaus thaum lub dav hlau sib luag.
5. Lo lus nug: Lub luag haujlwm dab tsi ntawm kev sib nqus induction ua si hauv transformers?
Lus Teb: Hauv cov transformers, kev hloov pauv magnetic induction hauv lub kauj thawj zaug ua rau muaj EMF hauv lub kauj thib ob, uas tso cai rau kev hloov pauv lub zog hluav taws xob ntawm cov kauj.
6. Lo lus nug: Kev txav ntawm tus neeg xyuas hluav taws xob hauv lub teb sib nqus ua rau muaj kev sib nqus hluav taws xob li cas?
Lus Teb: Thaum tus neeg coj hluav taws xob txav mus rau hauv lub zog sib nqus, tus naj npawb ntawm cov kab sib nqus uas hla dhau nws hloov pauv, ua rau muaj EMF raws li Faraday txoj cai.
7. Lo lus nug: Lub chav ntawm magnetic induction yog dab tsi?
Lus Teb: Lub chav ntawm kev sib nqus induction yog Tesla (T), sib npaug rau Weber ib square meter (Wb/m²).
8. Lo lus nug: Lenz txoj cai lij choj muaj feem cuam tshuam li cas rau kev sib nqus induction?
Lus Teb: Txoj cai Lenz hais txog qhov kev taw qhia ntawm EMF thiab tam sim no uas tshwm sim los ntawm kev siv hluav taws xob electromagnetic induction. Nws tawm tsam qhov kev hloov pauv ntawm cov hluav taws xob magnetic uas tsim nws.
9. Lo lus nug: Vim li cas hlau feem ntau siv ua lub hauv paus hauv cov kauj induction?
Lus Teb: Hlau yog ferromagnetic thiab tuaj yeem yooj yim magnetized. Thaum siv ua lub hauv paus, nws ua kom muaj zog magnetic induction thiab ua rau cov kab magnetic field concentrate, ua rau lub coil ua haujlwm tau zoo dua.
10. Lo lus nug: Qhov loj ntawm EMF uas raug cuam tshuam los ntawm qhov kev hloov pauv ntawm cov hlau nplaum sib nqus li cas?
Lus Teb: Qhov loj ntawm EMF uas raug tsim yog ncaj qha rau qhov kev hloov pauv ntawm cov hlau nplaum sib nqus.
11. Lo lus nug: Kev sib txuas lus sib pab yog dab tsi?
Lus Teb: Kev sib koom ua ke yog hais txog cov txheej txheem uas kev hloov pauv ntawm qhov tam sim no ntawm ib lub kauj ua rau muaj EMF hauv lub kauj ze vim yog qhov hloov pauv ntawm lub zog sib nqus.
12. Lo lus nug: Yuav ua li cas thiaj ua tau kom qhov ua tau zoo ntawm electromagnetic induction nce ntxiv hauv ib lub system?
Lus Teb: Kev ua haujlwm zoo tuaj yeem nce ntxiv los ntawm kev siv cov ntaub ntawv uas muaj cov permeability magnetic siab, txo cov kev poob resistive, thiab optimizing lub coil tsim thiab kev taw qhia piv rau lub magnetic teb.
13. Lo lus nug: Kev qhia tus kheej yog dab tsi?
Lus Teb: Kev hloov tus kheej tshwm sim thaum qhov hloov pauv tam sim no hauv lub kauj ua rau muaj EMF hauv tib lub kauj vim nws lub zog hloov pauv ntawm lub zog sib nqus.
14. Lo lus nug: Tus naj npawb ntawm kev tig hauv lub kauj cuam tshuam li cas rau kev sib nqus induction?
Lus Teb: Kev nce tus naj npawb ntawm cov tig hauv lub kauj ua rau EMF induced loj zuj zus, muab qhov kev hloov pauv ntawm cov hlau nplaum sib nqus tas li.
15. Lo lus nug: Lub luag haujlwm ntawm magnetic induction ua si li cas hauv cov tshuab hluav taws xob?
Lus Teb: Hauv cov tshuab hluav taws xob, kev txav mus los ntawm lub cev (feem ntau yog tig) ua rau muaj kev hloov pauv ntawm cov hlau nplaum hauv cov kauj, ua rau muaj kev cuam tshuam hluav taws xob thiab tsim cov hluav taws xob hloov pauv (AC).
16. Lo lus nug: Puas muaj peev xwm ua kom muaj hlau nplaum zoo li qub thiab cov hlau nplaum ruaj khov?
Lus Teb: Tsis yog, rau qhov kev sib nqus induction tshwm sim, yuav tsum muaj kev txav mus los ntawm cov hlau nplaum thiab tus neeg coj hluav taws xob, lossis lub teb sib nqus nws tus kheej yuav tsum hloov pauv.
17. Lo lus nug: Kev sib nqus induction muaj feem cuam tshuam li cas rau kev sib nqus permeability?
Lus Teb: Kev nkag tau ntawm cov hlau nplaum ntsuas lub peev xwm ntawm cov khoom siv los txhawb kev tsim ntawm lub zog sib nqus. Cov khoom siv uas muaj kev nkag tau ntawm cov hlau nplaum ntau dua tuaj yeem ua rau cov kab sib nqus sib nqus sib sau ua ke, ua rau muaj kev sib nqus ntau dua.
18. Lo lus nug: Ua li cas rau EMF uas raug tsim thaum tus neeg coj hluav taws xob txav mus sai dua los ntawm lub teb sib nqus?
Lus Teb: Qhov EMF uas raug tsim tawm nce ntxiv nrog rau qhov ceev ntawm tus neeg coj mus los ntawm lub zog sib nqus, muab lub zog sib nqus tas li.
19. Lo lus nug: Ob lub kauj uas muaj thaj chaw sib txawv puas tuaj yeem muaj tib lub magnetic induction?
Lus Teb: Yog, magnetic induction (B) yog ywj siab ntawm lub kauj qhov chaw hla tab sis nyob ntawm lub zog magnetic teb thiab lub kauj qhov kev taw qhia piv rau lub teb.
20. Lo lus nug: Qhov xwm txheej ntawm electromagnetic induction txhawb nqa lub hauv paus ntsiab lus ntawm kev txuag hluav taws xob li cas?
Lus Teb: Kev siv hluav taws xob hluav taws xob hloov lub zog tshuab (kev txav mus los) mus ua lub zog hluav taws xob (thiab rov ua dua). Thaum lub zog hloov pauv, tag nrho lub zog tseem khaws cia.
Kev nkag siab txog kev siv hluav taws xob sib nqus thiab nws cov ntsiab cai ua rau muaj kev nce qib hauv ntau yam thev naus laus zis, los ntawm kev tsim hluav taws xob mus rau cov khoom siv hluav taws xob.
