Video: Dab tsi yog qhov flux los ntawm ib lub ntsej muag ntawm lub voos xwmfab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Teb thiab piav qhia:
Cov hluav taws xob flux los ntawm ib ib sab ntawm a kub vim tus nqi taw tes yog −32000 V⋅m − 32 000 V ⋅ m.
Sib piv, dab tsi yog qhov hluav taws xob flux los ntawm ib lub ntsej muag ntawm lub voos xwmfab?
Tag nrho flux raws li Gauss txoj cai yog q/epsilon0. Yog li flux dhau txhua ntsej muag q/24 epsilon 0. Qhov teeb meem tuaj yeem daws tau yooj yim heev yog tias koj tsuas yog tuaj yeem pom qhov hluav taws xob teb kab ntawm tus nqi them q muab tso rau ntawm ib ntawm lub vertices ntawm lub kub.
Tsis tas li ntawd, dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum? raws li peb paub tias, tag nrho flux los ntawm a caj q yog q /ε0 (Gauss txoj cai). Yog tus nqi yog on ces kaum ntawm a kub , ib co flux nkag rau hauv kub thiab nplooj dhau ib co nws ntsej muag. Tab sis qee qhov ntawm flux tsis nkag rau hauv kub . Qhov 1/8th no yuav muab faib ua 3 ntu dua.
Ntawm no, dab tsi yog qhov hluav taws xob flux los ntawm txhua ntawm rau lub ntsej muag ntawm lub voos xwmfab?
Thaum tus nqi Q muab tso rau ntawm kaum ntawm a kub , them Q/8 yog sib koom los ntawm ib leeg kub . Cov nqi no Q/8 yog sib npaug sib npaug los ntawm txhua tus rau lub ntsej muag ntawm a kub . Yog li ntawd hluav taws xob flux los ntawm tag nrho cov rau lub ntsej muag yog q/8e0. Txawm li cas los no hluav taws xob flux los ntawm ib cov ntsej muag yog q48e0.
Yuav ua li cas koj xam flux?
Tag nrho cov hluav taws xob flux tawm ntawm qhov chaw kaw yog sib npaug rau tus nqi uas muab faib los ntawm kev tso cai. Hluav taws xob flux los ntawm ib cheeb tsam yog txhais raws li qhov hluav taws xob teb multiplied los ntawm cheeb tsam ntawm qhov chaw projected nyob rau hauv ib tug dav hlau perpendicular mus rau lub teb.
Pom zoo:
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