Yuav ua li cas voltage

Nrog lub tswvyim ntawm "voltage" tag nrho cov ntawm peb tau mus fim yuav luag txhua txhua hnub, vim hais tias cov cheeb tsam ntawm qhov kev siv tsis yog tag xwb los yeej siv. Qhov no xob laim thaum lub sij hawm los nag, thiab sparks rau ib lub hnab yas zuag thiab khaub ncaws ntawm cov khoom cua fibers thiab li ntawd.

Qhuav Academic lus qhia nram qab no cov lus txhais ntawm lub phenomenon: voltage - yog ib lub cev muaj nuj nqis qhia tus nqi ua los ntawm tus nqi ntawm 1 C (coulomb) lub lag luam. Pendant, nyob rau hauv lem, qhia tus nqi ntawm cov nqi ntawm qhov cov uas ploj lawm conductive khoom siv rau 1 thib ob nrog ib tug tam sim no ntawm 1 A.

Nws tseem yog permissible mus rau lwm lub ntsiab txhais, raws li uas tus voltage yog tus piv ntawm kev ua hauj lwm ua los ntawm cov hluav taws xob field rau lub zog ntawm tus test (cov kev sojntsuam) xwb ntawm ob lub ntsiab lus, mus rau lub zauv tus nqi ntawm no xwb. Nyob rau hauv cov ntaub ntawv no nws yog assumed tias tus nqi hloov lwm lub tsev tsis muaj feem xyuam rau tej qhov sib txawv (voltage tsis hloov), thiab txoj kev muaj zog muaj peev xwm yuav tsis quav ntsej li. Nyob rau hauv ib lub mis no txhais yog sau raws li nram no:

U = A / q,

qhov twg U - voltage, A - ua hauj lwm, q - xwb.

Yuav kom nco ntsoov dab tsi rau hauv lub measured voltage, muaj yog tsis muaj yuav tsum tau nyob rau hauv txoj kev kawm, vim hais tias nyiaj yog ib txwm rau ntawm txhais tes, vim tag nrho cov tam sim no qhov chaw qhia voltage nqi thiab nws cov dimension: nws yog txaus saib thaum twg lub roj teeb. Unit - V (B, V).

Cov nqe lus "voltage" rau lub DC thiab AC circuits yog cov sib txawv. Nyob rau hauv alternating tam sim no, yus los ntawm ib tug periodic sinusoid zaj ntawm lub voj point, yog siv rau lub xam yog tsis instantaneous, thiab rms nqi. Qhov no yog tau ua tsaug rau lub fact tias nws txoj hauj lwm nrog ib tug active linear load hnov txaus rau lub DC voltage.

Cov neeg uas muaj ib lub caij nyoog mus rau nrog peb theem motors, yeej kos mloog mus rau ib tug coj txawv txawv nkag nyob rau hauv lub passport yam ntxwv. Muaj, los ntawm tus mob stroke qhia ob voltages xws li 220/380 V. Yog tsis muaj typo muaj, tseeb, cov khoom siv yog tau khiav lag luam ntawm ob tug sib txawv operating qhov tseem ceeb. Qhov twg network 380 yuav coj 220? Nws hloov tawm, lub voltage yuav tsum yog theem los yog linear, nyob ntawm seb qhov ntsuas txoj kev. Theem yog txiav txim ntawm xab qhov txawv ntawm txhua theem thiab hauv nruab nrab neeg xyuas pib, thiab ib tug linear - nruab nrab ntawm cov theem conductors. By txuas lub load Circuit Court nyob rau hauv ib tug daim duab peb sab, ib tug yuav tau ib tug linear thiab sib npaug zos theem voltages, thiab rau circuits "lub hnub qub" theem yog 1,73 lub sij hawm tsawg linear.

voltmeter - ib tug tshwj xeeb ntaus ntawv yog siv los ntsuas voltage. Nws lub ntsiab feature - yog qhov yuav tsum tau mus cuag tokosnimayuschih probes thoob plaws lub load. High nrog kuj tsis paub distortion shunting. Uas yog vim li cas, piv txwv li, nyob rau hauv domestic siv tej zaum yuav ib tug ncaj qha kev txuas mus rau ib tug hluav taws xob (tsis zoo li ammeter muaj xws li ib tug Circuit Court).

Tab sis cia storey mis kev kawm ntawv thiab xyuas, dab tsi yog qhov "hluav taws xob voltage", nyob rau hauv tej yam yooj yim tib neeg lus. Yog li, qhov txawv xwb (tej zaum) ntawm ob tug arbitrary cov ntsiab lus ntawm tus neeg xyuas pib los yog hluav taws xob field. Tau qhov twg los hais tias ua zog ntawm ib tug neeg xyuas pib ntawm electrons (lub generator, ib lub roj teeb) generates nyob ib ncig ntawm lawv abundance, thiab lwm yam - tsis zoo. Raws li, qhov tus nqi ntawm cov nqi yog kuj sib txawv. Nws suffices mus cuag cov ntsiab lus ntawm tej kev nruab nrab, tshwm sim thiab hluav taws xob tam sim no - lub zog ntawm them hais, nyhav neutralize no sib txawv. Nyob rau hauv lwm yam lus, tam sim no assumes qhov aspiration atoms mus rau ib tug ruaj khov lub xeev, ntxaug magnetic teb ntawm lub generator. Nro yuav nyob ua ib ke tsis muaj tam sim no yog hais tias tus kuj ntawm lub ntsiab lus yog loj. Qhov no piav qhia qhov tseeb hais tias lub roj teeb yog tsis paub "sib ntaus sib tua tam sim no."