Video: Dab tsi yog qhov hluav taws xob hauv ib tus neeg xyuas pib?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov hluav taws xob teb yog zero nyob rau hauv ib tug conductor . Tsuas yog sab nraum a tus thawj coj , cov hluav taws xob teb cov kab yog perpendicular rau nws nto, xaus los yog pib ntawm nqi ntawm qhov chaw. Ib qho kev them nyiaj ntau dhau nyob rau ntawm qhov chaw lossis qhov chaw ntawm a tus thawj coj.
Ib yam li ntawd ib tug yuav nug, dab tsi yog qhov hluav taws xob teb nyob rau hauv ib tug charged conductor?
Cov net hluav taws xob ntawm a tus thawj coj nyob nkaus ntawm nws qhov chaw. (Qhov kev sib cav sib ceg zoo li nqi los ntawm Coulomb txoj cai lij choj xav kom tus nqi ua kom deb li deb li sai tau, yog li ntawm qhov chaw tus thawj coj .) 2. Ib hluav taws xob teb sab hauv tus tus thawj coj yog zero.
Kuj Paub, hluav taws xob tuaj yeem dhau los ntawm tus neeg xyuas pib? Cov lus hais tias hluav taws xob teb kab tsis tuaj yeem dhau los ntawm tus neeg xyuas pib , tsuas yog tsis ncaj ncees lawm. Txawm li cas los xij, thaum muaj qhov sib npaug zoo li qub (tsis muaj nqi txav), nws yog qhov tseeb tias qhov hluav taws xob teb hauv a tus thawj coj yuav tsum yog xoom.
Ua li no, vim li cas lub teb hluav taws xob hauv ib tus neeg xyuas pib xoom?
Nyob rau hauv electrostatics dawb xwb nyob rau hauv ib tug zoo tus thawj coj nyob ntawm qhov chaw xwb. Yog li tus nqi pub dawb sab hauv tus tus thawj coj yog xoom . Yog li cov teb nyob rau hauv nws yog tshwm sim los ntawm tsub rau saum npoo. Txij li cov nqi yog tib yam thiab kev faib tawm yog UNIFORM, lub hluav taws xob teb tso tseg ib leeg.
Yuav ua li cas tshwm sim thaum tus neeg xyuas pib muab tso rau hauv qhov hluav taws xob sab nraud?
Hauv ib tus thawj coj electrons muaj kev ywj pheej txav. Yog hais tias lawv raug ua los ntawm ib tug quab yuam, lawv yuav ceev nrooj ntawm lub zog. Yog ib tus neeg xyuas pib muab tso rau in ib hluav taws xob sab nraud , ib lub zog F = -eE ua rau txhua tus dawb electron. Electrons ceev thiab nce nrawm nyob rau hauv ib qho kev taw qhia opposite rau lub teb.
Pom zoo:
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