Qhov sib txawv tseem ceeb ntawm bar hlau nplaum thiab electromagnet yog qhov bar hlau nplaum muaj ib qho chaw sib nqus mus tas li whereas electromagnet muaj ib ntus magnetic teb.
Ib lub hlau nplaum yog cov khoom siv uas tuaj yeem tsim cov hlau nplaum. Lub magnetic teb yog invisible. Tab sis, nws tuaj yeem tsim lub zog uas rub rau lwm yam khoom siv ferromagnetic xws li hlau. Tsis tas li, nws tuaj yeem nyiam lossis tawm tsam lwm cov hlau nplaum. Tsis tas li ntawd, muaj ob hom hlau nplaum loj li cov hlau nplaum ruaj khov thiab ib ntus. Cov hlau nplaum bar yog ib qho piv txwv zoo ntawm cov hlau nplaum ruaj khov thaum lub electromagnet yog ib qho piv txwv ntawm ib ntus.
Bar Magnet yog dab tsi?
Ib daim hlau nplaum yog ib qho hlau nplaum ruaj khov uas tuaj yeem tsim nws tus kheej qhov chaw sib nqus tsis tu ncua. Cov kab ntawm cov hlau nplaum ntawm cov hlau nplaum no ua cov kab kaw. Qhov tseem ceeb tshaj plaws, cov kev taw qhia teb yog sab nraud ntawm tus ncej qaum teb thiab mus rau sab qab teb ntawm tus hlau nplaum. Cov ntaub ntawv ferromagnetic tuaj yeem siv los ua cov hlau nplaum.
Daim duab 01: Ib Bar Magnet
Cov hlau nplaum muaj zog tshaj plaws hauv cov hlau nplaum. Thaum xav txog sab nraud magnetic teb, qhov muaj zog tshaj yog nyob ze ntawm tus ncej. Sab qaum teb ntawm ib lub hlau nplaum tuaj yeem nyiam tus ncej sab qab teb ntawm lwm tus hlau nplaum. Txawm li cas los xij, tus ncej qaum teb repels sab qaum teb ncej ntawm lwm cov hlau nplaum thiab vice versa. Peb tuaj yeem yooj yim taug qab cov kab sib nqus ntawm cov hlau nplaum no siv lub compass. Lub koob ntawm lub compass rotates mus txog rau thaum nws kab nrog cov magnetic teb kab ntawm cov hlau nplaum.
Electromagnet yog dab tsi?
Ib lub tshuab hluav taws xob yog ib hom hlau nplaum ib ntus uas tuaj yeem tsim cov hlau nplaum hauv qhov muaj hluav taws xob tam sim no. Nws yog ib ntus vim hais tias cov magnetic teb ploj thaum peb tua hluav taws xob tam sim no. Tsis tas li ntawd, cov hlau nplaum no feem ntau muaj cov hlau qhov txhab rau hauv lub kauj. Ntawm no, cov tam sim no uas dhau los ntawm cov hlau tsim ib qho chaw sib nqus.
Daim duab 02: Ib qho Electromagnet
Thiab, qhov no magnetic teb yog concentrated nyob rau hauv lub qhov nyob rau hauv nruab nrab ntawm lub qhov txhab coil. Feem ntau, lub coil yog qhov txhab nyob ib puag ncig ntawm cov hlau nplaum. Tsis tas li ntawd, cov hlau nplaum no yog cov khoom siv ferromagnetic. Yog li ntawd, nws tuaj yeem tsim cov hlau nplaum muaj zog.
Qhov txiaj ntsig tseem ceeb ntawm hom hlau nplaum no yog qhov peb tuaj yeem hloov pauv cov hlau nplaum sai sai los ntawm kev tswj cov hluav taws xob tam sim no uas dhau los ntawm cov hlau. Txawm li cas los xij, ib qho tsis zoo yog qhov no xav tau lub zog txuas ntxiv kom tswj tau qhov sib nqus.
Qhov txawv ntawm Bar Magnet thiab Electromagnet yog dab tsi?
Ib daim hlau nplaum yog cov hlau nplaum ruaj khov uas tuaj yeem tsim nws tus kheej qhov chaw sib nqus tsis tu ncua thaum lub tshuab hluav taws xob yog ib hom hlau nplaum ib ntus uas tuaj yeem tsim cov hlau nplaum sib nqus thaum muaj hluav taws xob tam sim no. Yog li ntawd, qhov sib txawv tseem ceeb ntawm bar hlau nplaum thiab electromagnet yog qhov bar hlau nplaum muaj qhov chaw sib nqus mus tas li thaum cov hlau nplaum muaj qhov sib nqus ib ntus. Tsis tas li ntawd, peb tsis tuaj yeem hloov pauv qhov sib nqus ntawm cov hlau nplaum nplaum sai sai raws li peb xav tau tab sis nrog cov hlau nplaum, nws muaj peev xwm los tswj cov hluav taws xob tam sim no uas dhau los ntawm cov hlau. Yog li, qhov no kuj yog qhov sib txawv ntawm bar hlau nplaum thiab electromagnet. Ntxiv mus, peb tuaj yeem siv cov hlau nplaum nplaum raws li nws yog tab sis cov electromagnets ib txwm xav tau lub zog los tsim cov hlau nplaum.
Cov lus tseeb ntxiv txog qhov sib txawv ntawm bar hlau nplaum thiab electromagnet muaj nyob rau hauv cov ntaub ntawv hauv qab no.
Summary – Bar Magnet vs Electromagnet
Ob lub hlau nplaum thiab cov hlau nplaum yog cov hlau nplaum uas muaj peev xwm nyiam lossis tawm tsam yam khoom. Qhov sib txawv tseem ceeb ntawm bar hlau nplaum thiab electromagnet yog qhov bar hlau nplaum muaj ib qho chaw sib nqus mus tas li whereas electromagnet muaj ib ntus magnetic teb.
