Incazelo Yokungeniswa Kwamagnetic
Ukufakwa kwe-magnetic kuyinto eyisisekelo ebonakalayo enezinhlelo zokusebenza ezibanzi emikhakheni ehlukahlukene yobuchwepheshe besimanje. Kwaqala ukutholwa nguMichael Faraday ngekhulu le-19 ngochungechunge lwezivivinyo ezashintsha ngokuyisisekelo indlela esibheka ngayo amandla kanye namasimu kazibuthe. Kulesi sihloko, sizochaza ngokuningiliziwe ukuthi ukungeniswa kwe-magnetic kuyini, ukuthi kusebenza kanjani, kanye nezinhlelo zokusebenza ezingokoqobo kubuchwepheshe besimanje.
Ukuqonda Ukungeniswa Kwamagnetic
Ukungeniswa kwe-magnetic inqubo lapho insimu yamagnetic ingakhiqiza khona ugesi kumqhubi. Lesi simo sokungeniswa sihilela ukusebenzisana phakathi kwensimu yamagnetic nomqhubi kagesi, okuholela kumandla kagesi (i-EMF) noma i-voltage. Umqondo oyisisekelo wokungeniswa kwe-magnetic uchazwa futhi ngoMthetho kaFaraday Wokungeniswa kwe-Electromagnetic kanye noMthetho kaLenz.
Umthetho kaFaraday uchazwa ngokwezibalo ngokuthi:
\[ \mathcal{E} = -\frac{d\Phi}{dt} \]
lapho \( \mathcal{E} \) kungamandla e-electromotive, kanye \( \Phi \) kungukugeleza kwamagnetic okuwumkhiqizo wensimu yamagnetic (\( B \)) kanye nendawo (\( A \)) lapho imigqa yamagnetic yamandla idlula khona nge-engeli ethile.
Okwamanje, uMthetho kaLenz unikeza isiqondiso samandla kagesi abangelwayo. Ngendlela yawo elula, uMthetho kaLenz uthi isiqondiso samandla kagesi abangelwayo sihlala sinjalo kangangokuthi sikhiqiza insimu yamagnetic ephikisana noshintsho ekugelezeni kwamagnetic okwabangela lokho.
Indlela Ukwenziwa Kwe-Magnetic Kusebenza Ngayo
Ukungeniswa kwamagnetic kuncike kakhulu ekushintsheni kokugeleza kwamagnetic ngokuhamba kwesikhathi. Kunezindlela eziningana zokushintsha ukugeleza kwamagnetic, okuhlanganisa:
1. Ukuhambisa Imagnethi Ku-Conductor: Enye yezindlela ezilula zokukhiqiza i-induction yamagnetic ukuhambisa imagnethi ku-conductor ejikelezayo njenge-coil yocingo. Njengoba imagnethi ihamba, imigqa yayo yamagnetic field inqamula ku-conductor, ikhulisa noma yehlise inani le-magnetic flux ku-coil bese idala i-voltage kagesi.
2. Ukushintsha Amandla Ensimu Kamagnetic: Uma amandla ensimu kamagnetic, \(B \), eshintsha ngokuhamba kwesikhathi ngaphakathi kwendawo, isibonelo ngokuvula noma ukuvala i-electromagnet, khona-ke i-magnetic flux iyashintsha futhi lokhu kubangela ukuthi kwenzeke amandla e-electromotive.
3. Ukujikeleza Umqhubi Ensimini KaMazibuthe: Lesi yisimiso esisetshenziswa ekukhiqizeni ugesi. Lapho umqhubi, njengekhoyili, ejikeleziswa ensimini kamazibuthe, ukuqondiswa komqhubi maqondana nensimu kuyashintsha, okubangela ushintsho ekugelezeni kukamazibuthe futhi kukhiqize ugesi.
Izicelo kubuchwepheshe besimanje
1. I-Transformer kagesi
I-transformer kagesi iyithuluzi elishintsha izinga le-voltage ohlelweni lokudlulisa amandla. Ama-transformer asebenza ngesimiso sokungeniswa kwamagnetic, lapho ushintsho ku-voltage ku-coil eyinhloko lubangela i-voltage ku-coil yesibili nge-core yensimbi.
2. Ijeneretha Kagesi
Amajeneretha kagesi asebenzisa i-magnetic induction ukuguqula amandla omshini abe amandla kagesi. Lapho umqhubi ejikeleza ensimini yamagnetic, ukushintshashintsha kwe-magnetic flux kubangela i-voltage kagesi kumqhubi, esetshenziswa ukudlulisa ugesi kugridi yamandla.
3. Imoto Kagesi
Ama-motor kagesi asebenza ngesimiso esiphambene nama-generator. Ngaphakathi kwe-motor, ugesi osetshenziswa kukhoyili udala insimu yamagnetic esebenzisana nensimu yamagnetic engaguquki ukuze ikhiqize ukunyakaza okujikelezayo noma i-torque.
4. Ukungeniswa Kwe-Electromagnetic Kwezokuxhumana
Ukufakwa kwe-electromagnetic kusetshenziswa nakubuchwepheshe bezokuxhumana, ikakhulukazi kuma-antenna. Amagagasi e-electromagnetic abangela imisinga kagesi ekwamukeleni ama-antenna ngokufakwa kwe-induction, abese eguqulwa abe amasignali angasetshenziswa amadivayisi kagesi njengemisakazo namathelevishini.
5. Ukuphepha Nokuhlonza
Izinhlelo ezifana namathegi e-RFID (Radio Frequency Identification) kanye nobuchwepheshe bokulwa nokwebiwa ezitolo zisebenzisa i-magnetic induction ukufunda ulwazi noma ukuthola izinto ngaphandle kokuxhumana okuqondile. Insimu yamagnetic evela kumfundi wethegi noma inzwa ibangela ithegi noma idivayisi ukuthi ithumele isignali yokubuyisa equkethe ulwazi lokuhlonza.
Inqubo Yokuhlola Ukufakwa Kwamagnetic kaFaraday
UMichael Faraday wenza uchungechunge lwezivivinyo ezinkulu kakhulu ocwaningweni lwe-magnetic induction. Kokunye kokuhlolwa kwakhe okudumile, wahlela ikhoyili eduze kwe-magnet futhi waphawula ukuthi lapho insimu yamagnetic ishintshwa ngokuhambisa i-magnet noma ukushukumisa ikhoyili, kwavela i-emf ebangelwa ngaphakathi kwekhoyili.
Ukuze sibonise lokhu okutholakele, ake sicabangele ikhoyili yocingo exhunywe ku-galvanometer. Uma i-bar magnet icindezelwa ngaphakathi noma ngaphandle kwekhoyili, inaliti ye-galvanometer izohamba, okubonisa ukuthi kunogesi ofakiwe kukhoyili. Uma i-magnet isendaweni yayo ngaphakathi kwekhoyili, akukho mshini oqinisekisiwe.
UFaraday uphinde wathuthukisa lo mbono ngokuqhubekayo nezinye izivivinyo, njengokusebenzisa oma-electromagnet nokudala imisinga kagesi ngokushintsha amasimu kagesi ngosizo lwamakhoyili esibili.
Isiphetho
Ukufakwa kwamandla kagesi kungumqondo oyisisekelo sentuthuko eminingi kwezobuchwepheshe kanye nezimboni namuhla, kusukela ekukhiqizweni kwamandla kagesi kuya kumishini yansuku zonke efana nama-motor kanye nama-transformer. Lesi simo sivule umnyango wezinto ezibalulekile ezitholakele futhi sakhe isisekelo sezici eziningi zokuphila kwanamuhla.
Ngokuqonda okujulile kokungeniswa kwamagnetic, asikwazi nje ukuqonda kangcono ukuthi amadivayisi esiwasebenzisa njalo asebenza kanjani, kodwa futhi sithuthukise ubuchwepheshe obusha nobusebenza kahle esikhathini esizayo. Amandla alo mqondo ayaqhubeka nokukhula, futhi ucwaningo olwengeziwe kule ndawo lunamandla okuholela emisha emisha kakhulu.
