Muaj peev xwm sib txawv vs Voltage
Muaj peev xwm sib txawv thiab qhov hluav taws xob yog ob nqe lus siv hauv engineering los piav txog qhov sib txawv ntawm qhov muaj peev xwm hauv ob lub ntsiab lus. Voltage yog xa mus rau hluav taws xob uas qhov sib txawv muaj peev xwm cuam tshuam nrog hluav taws xob, sib nqus thiab gravitational teb. Txawm li cas los xij, yog tias tsuas yog qhov hluav taws xob muaj kev txhawj xeeb, qhov sib txawv muaj peev xwm zoo ib yam li qhov voltage.
Muaj peev xwm sib txawv
Muaj peev xwm yog lub tswv yim siv hauv hluav taws xob, sib nqus thiab gravitational teb. Muaj peev xwm yog qhov ua haujlwm ntawm qhov chaw thiab qhov sib txawv ntawm qhov point A thiab point B yog xam los ntawm kev rho tawm lub peev xwm ntawm A los ntawm lub peev xwm ntawm B. Nyob rau hauv lwm yam lus, gravitational muaj peev xwm sib txawv ntawm cov ntsiab lus A thiab B, yog tus nqi ntawm cov hauj lwm uas yuav tsum tau ua kom txav ib chav tsev loj (1 kg) los ntawm point B mus rau point A. Nyob rau hauv ib tug hluav taws xob teb, nws yog npaum li cas ntawm kev ua hauj lwm rau yuav tsum tau ua kom txav ib qho nqi (+1 Coulomb) los ntawm B mus rau A. Gravitational muaj peev xwm sib txawv yog ntsuas nyob rau hauv J / kg qhov hluav taws xob muaj peev xwm sib txawv yog ntsuas nyob rau hauv V (Volts).
Txawm li cas los xij, hauv kev siv ntau, lo lus 'muaj peev xwm sib txawv' feem ntau yog siv los piav txog qhov sib txawv ntawm hluav taws xob. Yog li ntawd, peb yuav tsum siv lo lus no ua tib zoo kom tsis txhob txhais lus yuam kev.
Voltage
Hluav taws xob muaj peev xwm sib txawv ntawm point A thiab B tseem hu ua qhov voltage ntawm point A thiab point B. Voltage yog ntsuas hauv chav Volts (V). Voltmeter yog cov cuab yeej siv los ntsuas qhov voltage. Lub roj teeb muab qhov hluav taws xob nruab nrab ntawm nws ob qhov kawg (electrodes) thiab nws sab zoo muaj peev xwm ntau dua thiab tsis zoo electrode muaj peev xwm qis dua.
Nyob hauv ib lub voj voog, tam sim no ntws los ntawm qhov muaj peev xwm siab dua mus rau qis dua. Thaum nws mus los ntawm ib qho resister, qhov voltage ntawm ob kawg tuaj yeem pom. Qhov no yog hu ua 'voltage drop'. Txawm hais tias qhov voltage ib txwm nyob nruab nrab ntawm ob lub ntsiab lus, qee zaum tib neeg thov kom muaj qhov hluav taws xob ntawm qhov taw tes. Qhov no yog hais txog qhov hluav taws xob ntawm qhov taw tes tshwj xeeb thiab qhov taw qhia siv. Cov ntsiab lus siv no feem ntau yog 'hauv av' thiab hluav taws xob muaj peev xwm ntawm nws suav tias yog 0V.
Dab tsi yog qhov txawv ntawm Qhov Muaj Peev Xwm Qhov Sib Txawv thiab Voltage?
1. Muaj peev xwm sib txawv tuaj yeem pom nyob rau hauv txhua qhov chaw (gravitational, hluav taws xob, sib nqus thiab lwm yam), thiab qhov hluav taws xob tsuas yog siv rau hluav taws xob.
2. Muaj peev xwm sib txawv ntawm qhov hluav taws xob yog hu ua qhov voltage.
3. Kev ntsuas hluav taws xob yog ntsuas hauv Volts (V) thiab chav ntsuas ntsuas qhov sib txawv tau hloov nrog hom lub zog hluav taws xob (V rau hluav taws xob, J / kg rau gravitational thiab lwm yam).
