Tam sim no vs Tus Nqi
Tam sim no thiab nqi yog ob lub ntsiab lus uas muaj cov khoom hluav taws xob ntawm cov teeb meem. Kev nkag siab zoo txog cov ntsiab lus ntawm kev them nqi thiab tam sim no tseem ceeb heev hauv kev lag luam xws li physics, hluav taws xob engineering, hluav taws xob engineering, mechanics thiab kev sib txuas lus technologies. Cov ntsiab lus no muaj txiaj ntsig zoo hauv kev nkag siab txog electromagnetic field theory, uas yog ib qho tseem ceeb heev hauv physics. Hauv tsab xov xwm no, peb yuav tham txog qhov tob npaum li cas thiab tam sim no yog dab tsi, lawv cov ntsiab lus, cov txiaj ntsig suav nrog lawv, lawv qhov zoo sib xws, dab tsi ua rau tus nqi thiab tam sim no thiab lawv qhov sib txawv.
Nyiaj
Chaw yog lub tswv yim kev tshawb fawb yooj yim, uas tsis tuaj yeem txhais raws nraim. Nws yog qee zaum txhais tau tias yog ib yam khoom ntawm qhov teeb meem, uas ua rau qhov teeb meem muaj kev quab yuam thaum lwm tus nqi nyob ntawm qhov kev ncua deb. Qhov kev txhais no nws tus kheej tuav tus nqi, uas txhais tau tias, qhov no tsis yog tag nrho cov ntsiab lus. Txawm li cas los xij, kev coj tus cwj pwm ntawm cov nqi raug kawm tau zoo thiab ua qauv zoo. Muaj ob hom kev them nqi, cov nqi zoo thiab cov nqi tsis zoo. Cov nqi muab tso rau ntawm qhov kev ncua deb ntawm ib leeg ib txwm siv zog rau ib leeg. Qhov kev quab yuam no yog thawj zaug txhais tau tias siv tus qauv ntawm kev ua ntawm qhov deb. Vim qhov tsis tiav ntawm cov qauv no, physicists tom qab ntawd txhais tau tias nws siv cov electromagnetic teb. Charge yog hais los tsim ib qho hluav taws xob nyob ib ncig ntawm nws. Lub zog ntawm lub teb hluav taws xob no rau tus nqi taw tes yog muab los ntawm E=Q/4πεr 2, qhov twg Q yog tus nqi hauv coulombs, ε yog qhov hluav taws xob permittivity ntawm nruab nrab, thiab r yog qhov kev ncua deb mus rau qhov chaw uas lub zog ntsuas los ntawm tus nqi. Chav ntsuas ntsuas yog coulomb, uas yog lub npe hu ua Charles-Augustin de Coulomb. Cov kab hluav taws xob hauv hluav taws xob kuj yog ib lub tswv yim cuam tshuam nrog cov nqi. Lawv yog ib qho kev xav ntawm cov kab, uas pib ntawm qhov chaw them nqi zoo thiab xaus rau qhov tsis zoo. Tus nqi yog ib qho kev txuag ntawm lub ntiaj teb. Nws kuj yog ib qho kev sib txheeb sib txawv, uas txhais tau hais tias tus nqi ntawm cov khoom tsis hloov nrog qhov nrawm dua.
Tam sim no txhais tau tias yog tus nqi ntws ntawm cov nqi 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 ceev ntawm tus nqi thiab hluav taws xob teb.
qhov txawv ntawm qhov tam sim no thiab nqi dab tsi?
¤ Tus nqi yog lub tswvyim tsis meej, thaum tam sim no yog lub tswvyim zoo.
¤ Tam sim no yog qhov ntws ntawm cov nqi, cov nqi nyob ruaj khov tsis tuaj yeem muab tam sim no.
¤ Tus nqi tsuas yog nce mus rau qhov hluav taws xob xwb, thaum tam sim no tsim hluav taws xob thiab sib nqus teb.
