Coulomb txoj cai los qhov twg?
Coulomb txoj cai los qhov twg?

Video: Coulomb txoj cai los qhov twg?

Video: Coulomb txoj cai los qhov twg?
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Cov txoj cai . Coulomb txoj cai hais tias: Qhov loj ntawm electrostatic quab yuam ntawm attraction los yog repulsion ntawm ob lub ntsiab lus nqi yog ncaj qha proportional rau cov khoom ntawm qhov loj ntawm cov nqi thiab inversely proportional rau lub square ntawm qhov kev ncua deb ntawm lawv.

Tom qab ntawd, ib tug kuj yuav nug, Coulomb txoj cai tau muab los li cas?

Charles-Augustin de Coulomb , ib tug Fabkis physicist nyob rau hauv 1784, ntsuas lub zog ntawm ob lub ntsiab lus tsub nqi thiab nws tuaj nrog lub tswv yim hais tias lub zog yog inversely proportional rau lub square ntawm qhov deb ntawm cov nqi.

Ib tug kuj nug, vim li cas Coulomb txoj cai tseem ceeb? Nws txhais tau hais tias, qhov rov qab square dependence ntawm hluav taws xob quab yuam. Nws kuj tseem siv tau los muab cov txiaj ntsig yooj yim ntawm Gauss ' txoj cai rau cov xwm txheej dav dav kom raug. Thaum kawg, daim ntawv vector ntawm Coulomb txoj cai yog tseem ceeb raws li nws pab peb qhia cov kev taw qhia ntawm hluav taws xob teb vim raug nqi.

Ib sab ntawm no, leej twg tsim Coulomb txoj cai?

Charles-Augustin de Coulomb

Lub tsev ntawm Coulomb txoj cai yog dab tsi?

Chav tsev . Thaum lub electromagnetic txoj kev xav tau qhia nyob rau hauv lub International System ntawm Chav tsev , quab yuam yog ntsuas nyob rau hauv newtons, them nyob rau hauv coulombs ua , thiab deb ntawm meters. Coulomb cov tas li yog muab los ntawm ke = 14 np0. Qhov tsis tu ncua ε0 yog lub tshuab nqus hluav taws xob permittivity (tseem hu ua "electric constant") hauv C2⋅m2⋅ N1.

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