Cov Khoom Siv Hluav Taws Xob vs Hluav Taws Xob
Tam sim no yog qhov tseem ceeb hauv kev kawm txog cov tshuab hluav taws xob. Hluav taws xob tam sim no thiab cov pa tam sim no yog ob hom tam sim no, uas muaj txiaj ntsig zoo hauv thaj chaw txheeb ze. Lub tswv yim ntawm tam sim no tau siv dav hauv kev lag luam xws li hluav taws xob engineering, hluav taws xob engineering, electromagnetic theory thiab ntau lwm yam. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo hauv hluav taws xob tam sim no thiab cov pa hluav taws xob tam sim no txhawm rau ua kom tau zoo hauv cov haujlwm no. Hauv tsab xov xwm no, peb yuav tham txog dab tsi tam sim no yog dab tsi, hluav taws xob tam sim no thiab cov pa hluav taws xob yog dab tsi, lawv cov ntsiab lus, kev siv, kev sib txuas ntawm cov pa tam sim no thiab hluav taws xob tam sim no, lawv qhov zoo sib xws thiab thaum kawg qhov sib txawv ntawm cov pa tam sim no thiab hluav taws xob tam sim no.
Electric Current
Cov hluav taws xob tam sim no tuaj yeem txheeb xyuas tau raws li qhov tam sim no uas tshwm sim los ntawm kev khiav ntawm cov nqi, nyob rau hauv cov kev taw qhia ntawm cov nqi ntws. Tam sim no txhais tau tias yog tus nqi ntawm cov nqi ntws los ntawm qhov nruab nrab. Cov nqi no feem ntau yog nyob rau hauv daim ntawv ntawm electrons. Chav tsev SI rau tam sim no yog ampere, uas yog lub npe hu ua Andre-Marie Ampere. Tam sim no ntsuas siv ammeters. 1 Ampere yog sib npaug rau 1 Coulombs ib ob. Yuav tsum muaj lub zog electromotive rau qhov ntws tam sim no. Yog hais tias qhov sib txawv voltage ntawm ob lub ntsiab lus yog xoom, yuav tsis muaj tam sim no ntawm ob lub ntsiab lus. Tam sim no kuj muaj nyob rau hauv cov ntaub ntawv xws li nto tam sim no thiab eddy tam sim no. Ib qho tam sim no lossis ib qho kev txav txav ib txwm ua ib qho chaw sib nqus ntawm qhov hluav taws xob. Qhov no magnetic teb yog ib txwm rau qhov tshaj tawm ntawm tus nqi thiab hluav taws xob teb. Cov hluav taws xob tam sim no ntsuas nyob rau hauv cov kev taw qhia ntawm qhov ntws ntawm electrons. Ib qho hluav taws xob tam sim no ntsuas nyob rau hauv cov kev taw qhia ntawm net electron flow yog qhov tsis zoo.
Cov Lus Qhia Tam Sim No
Cov qauv tam sim no, lossis hauv lwm lo lus tus qauv tam sim no, ntsuas nyob rau hauv qhov sib txawv ntawm qhov ntws ntawm cov nqi tsis zoo (piv txwv li electrons). Yog tias qhov ntsuas tam sim no ntsuas rau qhov ntws ntawm cov nqi zoo, cov pa hluav taws xob tam sim no nyob rau hauv tib txoj kev raws li cov nqi ntws. Nyob rau hauv txhua qhov chaw yog tias lo lus "tam sim no" siv nws yog hais txog cov pa tam sim no. Txij li thaum tam sim no ntsuas nyob rau hauv tib txoj kev raws li cov electrons yog tsis zoo, qhov tam sim no ntsuas nyob rau hauv lub opposite kev taw qhia ntawm cov khiav ntawm electrons yog zoo. Qhov no txhais tau hais tias cov pa tam sim no ib txwm zoo. Cov pa tam sim no kuj ntsuas hauv ampere.
Dab tsi yog qhov txawv ntawm Pa thiab Hluav Taws Xob Hluav Taws Xob?
• hluav taws xob tam sim no tuaj yeem yog qhov tsis zoo lossis qhov zoo, tab sis cov qauv tam sim no yeej ib txwm zoo.
• Cov pa tam sim no rau cov khoom siv hluav taws xob yog qhov zoo, qhov hluav taws xob tam sim no tsis zoo.
• Rau qhov ntws ntawm cov nqi zoo, ob qho tib si hluav taws xob tam sim no thiab cov pa hluav taws xob zoo ib yam.
• Txij li yuav luag txhua qhov hluav taws xob hluav taws xob siv hluav taws xob ntws, nws tuaj yeem hais tau nyab xeeb tias cov pa tam sim no=– hluav taws xob tam sim no.
• Nyob rau hauv cov pa tam sim no, qhov ntws ntawm electrons yog assumed raws li ib tug khiav ntawm protons ntawm opposite direction.
