Video: Resistance nqi yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Resistors. Lub resistor yog ib qho cuab yeej uas tawm tsam qhov ntws ntawm hluav taws xob tam sim no. Qhov loj dua tus nqi ntawm ib tug resistor qhov ntau nws opposes tam sim no ntws. Cov tus nqi ntawm tus resistor yog muab rau hauv ohms thiab feem ntau hu ua nws ' tsis kam '.
Raws li txoj cai, koj ua li cas suav tus nqi tiv thaiv?
Yog tias koj paub tag nrho cov tam sim no thiab qhov hluav taws xob hla tag nrho lub voj voog, koj tuaj yeem pom tag nrho tsis kam siv Ohm Txoj Cai: R = V / I. Piv txwv li, ib qho hluav taws xob sib txuas muaj qhov hluav taws xob ntawm 9 volts thiab tag nrho tam sim no ntawm 3 amps. Tag nrho tsis kam RT = 9 volts / 3 amps = 3 Ω.
Tsis tas li ntawd, dab tsi yog kev tiv thaiv yooj yim txhais? Resistance definition Resistance yog ib qho hluav taws xob ntau uas ntsuas seb lub cuab yeej lossis cov khoom siv txo cov hluav taws xob tam sim no los ntawm nws. Cov tsis kam ntsuas nyob rau hauv units ntawm ohms (Ω).
Hauv qhov no, tus nqi tiv thaiv txhais li cas?
Teb: Ntxiv tag nrho cov kev tawm tsam thoob plaws hauv Circuit Court ua ke los xam tag nrho tsis kam . Yog koj tsis paub tus kheej tus nqi , siv Ohm's Law equation, qhov twg tsis kam = voltage faib los ntawm tam sim no. Plug hauv tus nqi rau voltage thiab tam sim no thiab daws rau R kom tau tag nrho tsis kam hauv Circuit Court.
Tus nqi tsis kam ntawm tib neeg lub cev yog dab tsi?
Lub NIOSH hais tias "Nyob rau hauv qhuav tej yam kev mob, lub tsis kam muab los ntawm cov tib neeg lub cev tej zaum yuav siab li 100,000 ohms. Cov tawv nqaij ntub los yog tawg tuaj yeem tso tau lub cev tsis kam mus rau 1,000 ohms, "ntxiv tias" high-voltage hluav taws xob hluav taws xob sai sai sai tib neeg daim tawv nqaij, txo cov tib neeg lub cev tsis kam mus txog 500 ohms".
Pom zoo:
Dab tsi yog qhov txawv ntawm ib puag ncig lapse tus nqi thiab adiabatic lapse tus nqi?
A. Ib puag ncig lapse tus nqi yog hais txog qhov kub thiab txias nrog nce qhov siab hauv troposphere; uas yog qhov kub ntawm ib puag ncig ntawm qhov chaw sib txawv. Nws implies tsis muaj huab cua txav. Adiabatic txias tsuas yog cuam tshuam nrog huab cua ascending, uas txias los ntawm kev nthuav dav
Dab tsi yog qhov kev nyeem ntawv ntawm infinite resistance?
Thaum koj pom qhov tsis muaj kev tawm tsam ntawm lub tshuab digital multimeter, nws txhais tau tias tsis muaj hluav taws xob tam sim no ntws los ntawm cov khoom koj ntsuas. Yog li ntawd, unlimited kuj txhais tau hais tias lub multimeter tau ntsuas ntau heev tsis kam uas tsis muaj ntws sab laug
Dab tsi yog ib puag ncig lapse tus nqi thiab adiabatic lapse tus nqi?
Recap • Lapse Rate yog tus nqi uas kub qis dua thaum qhov siab nce hauv huab cua • Ib puag ncig lapse tus nqi yog tus nqi uas kub qis dua thaum tus nqi tsis cuam tshuam los ntawm huab cua saturation • Environmental lapse rate txo sai dua thaum huab cua tsis ruaj khov. tsis ruaj khov
Puas yog hluav taws xob them nqi hluav taws xob tsuas yog hluav taws xob lossis yog tus nqi ntawm tag nrho cov atoms?
Tus nqi zoo attracts tus nqi tsis zoo thiab ua rau lwm tus nqi zoo. Puas yog hluav taws xob them nqi hluav taws xob tsuas yog hluav taws xob lossis yog tus nqi ntawm tag nrho cov atoms? Cov nqi hluav taws xob yog cov cuab yeej ntawm tag nrho cov atoms
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 cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua