Electrical zog vs Hluav taws xob fais fab
Lub zog hluav taws xob thiab hluav taws xob hluav taws xob yog ob qho tseem ceeb hauv hluav taws xob thiab hluav taws xob. Kab lus no yuav sib piv ob lub ntsiab lus thiab nthuav qhia qhov zoo sib xws thiab qhov sib txawv ntawm ob qhov ntau.
Hluav taws xob yog dab tsi?
Lub zog hluav taws xob yog lub npe muab rau kev ua haujlwm los ntawm lub zog hluav taws xob. Kev nkag siab hauv hluav taws xob muaj peev xwm yuav tsum nkag siab txog lub tswv yim ntawm hluav taws xob hluav taws xob. Lub teb hluav taws xob tau hais tias yog tsim los ntawm tag nrho cov nqi hluav taws xob txawm tias lawv tsiv los yog nyob ruaj ruaj. Ib qho hluav taws xob tuaj yeem tsim tau siv txhua lub sijhawm sib txawv ntawm cov hlau nplaum. Muaj ntau yam tseem ceeb ntawm hluav taws xob teb. Cov no yog hluav taws xob siv hluav taws xob, hluav taws xob muaj peev xwm thiab hluav taws xob flux ceev. Lub zog siv hluav taws xob txhais tau hais tias yog lub zog ntawm qhov ntsuas hluav taws xob los ntawm hluav taws xob. Qhov no yog muab los ntawm cov mis E=Q/4πεr 2, qhov twg Q yog tus nqi, ε yog qhov hluav taws xob permittivity ntawm nruab nrab, thiab r yog qhov deb ntawm qhov taw tes ntawm tus nqi taw tes. Q. Lub zog ntawm tus nqi taw tes q muab tso rau ntawm qhov taw tes yog sib npaug rau F=Qq/4πεr2 Yog q yog 1 coulomb, F yog sib npaug rau qhov hluav taws xob siv hluav taws xob. Lub peev xwm hluav taws xob ntawm ib qho taw tes yog txhais raws li lub zog yuav tsum tau coj tus nqi taw tes ntawm 1 coulomb los ntawm infinity mus rau qhov ntsuas qhov peev xwm. Lub zog no yog sib npaug rau cov haujlwm ua tiav ntawm tus nqi thaum nqa cov nqi ntawm infinity mus rau qhov taw tes. Yog hais tias ob qho tag nrho cov nqi yog qhov zoo, lub zog uas yuav tsum tau siv rau kev xeem nqi ntawm infinity mus rau qhov point yog ib txwm sib npaug thiab antiparallel rau lub zog repulsion ntawm ob nqi. Kev koom ua ke F los ntawm infinity rau r, nrog rau dr, peb tau txais lub peev xwm hluav taws xob (V) ntawm qhov taw tes raws li Q / 4πεr. Txij li thaum r yog ib txwm zoo, yog tias tus nqi tsis zoo, lub peev xwm hluav taws xob kuj yog qhov tsis zoo. Cov units ntawm hluav taws xob muaj peev xwm yog joule ib coulomb. Ib qho hluav taws xob zoo li qub yog qhov chaw khaws cia. Yog li ntawd, lub peev xwm hluav taws xob ntawm qhov hluav taws xob zoo li qub yog txoj kev ywj pheej. Lub peev xwm hluav taws xob ntawm cov teb no tsuas yog nyob ntawm txoj haujlwm xwb. Tus nqi pub dawb tso rau hauv qhov chaw hluav taws xob zoo li txav mus rau qhov qis tshaj plaws muaj peev xwm ua tau. Qhov kev khiav ntawm cov nqi no yuav ua rau lub peev xwm ntawm qhov tsis muaj peev xwm kawg tau nce siab, yog li txo qhov muaj peev xwm sib txawv. Qhov no txo lub peev xwm lub zog thaum kawg yuav nres qhov ntws ntawm cov nqi. Lub zog hluav taws xob yog lub zog uas yuav tsum tau ua kom muaj peev xwm sib txawv ntawm ob lub ntsiab lus. Lub zog hluav taws xob yog ntsuas hauv joules. Lub zog hluav taws xob kuj tseem tuaj yeem txhais tau tias qhov kev ua haujlwm yuav tsum tau txav mus rau hauv qhov hluav taws xob.
Hluav taws xob yog dab tsi?
Hluav taws xob yog tus nqi tsim hluav taws xob. Qhov no yog ntsuas hauv watt lossis joules ib ob. Txawm hais tias hluav taws xob hluav taws xob yog qhov tseem ceeb ntau qhov hluav taws xob hluav taws xob yog qhov muaj txiaj ntsig zoo hauv kev tswj hwm hluav taws xob. Txij li lub zog hluav taws xob yog tus nqi ntawm hluav taws xob xa hluav taws xob, qhov ntau yog qhov tseem ceeb hauv kev tsim cov tshuab tiv thaiv.
Qhov txawv ntawm Hluav Taws Xob thiab Hluav Taws Xob yog dab tsi?
• Lub zog hluav taws xob yog ib hom ntawm lub zog, tab sis hluav taws xob hluav taws xob yog lub zog hluav taws xob tsim los yog dissipated ib ob.
• hluav taws xob hluav taws xob ntsuas hauv joules, tab sis hluav taws xob hluav taws xob ntsuas hauv watt.
