Dab tsi yog qhov zoo tagnrho voltmeter?
Dab tsi yog qhov zoo tagnrho voltmeter?

Video: Dab tsi yog qhov zoo tagnrho voltmeter?

Video: Dab tsi yog qhov zoo tagnrho voltmeter?
Video: Hmong new song 2016 - Yog dab tsi - Xub Hluav Taws (Official MV) 2024, Kaum ib hlis
Anonim

Cov zoo tagnrho voltmeter yog ib lub tswv yim theoretical ntawm a voltmeter ntsuas uas tsis cuam tshuam rau Circuit Court, vim hais tias tam sim no mus rau lub zoo tagnrho voltmeter yog zero. Raws li Ohms txoj cai, lub internal impedance ntawm lub zoo tagnrho voltmeter yuav tsum yog infinite. Niaj hnub nimno Digital voltmeter ntsuas muaj ib tug siab heev internal impedance.

Ib yam li ib tug yuav nug, dab tsi cov khoom yuav tsum muaj qhov zoo tagnrho voltmeter?

Ib qho zoo tagnrho voltmeter yuav muaj infinite tsis kam , ib tug foolproof system los tiv thaiv kom raug ntau tshaj voltage (pib ntau yam), thiab yuav dawb rau cov lus nug. Ib qho ammeter zoo tagnrho yuav muaj xoom tsis kam thiab ib tug foolproof system los tiv thaiv kom raug ntau tshaj voltage (pib ntau yam), thiab dua dawb rau qhov nug.

Kuj Paub, puas yog qhov zoo tagnrho voltmeter muaj qhov loj lossis me tsis kam? Ib zoo tagnrho Ammeter muaj xoom tsis kam thiab ib Zoo tagnrho Voltmeter muaj tsis kawg tsis kam . Xav txog ib pliag txog txoj hauv kev uas lawv feem ntau siv los ntsuas qhov tam sim no thiab qhov hluav taws xob hauv Circuit Court.

Yog li, vim li cas qhov kev tiv thaiv ntawm qhov zoo tagnrho voltmeter yog infinite?

Nws puas yuav nres qhov ntws ntawm tam sim no nyob rau hauv tag nrho Circuit Court vim nws siab tsis kam ? Zoo tagnrho voltmeter muaj infinite kuj yog li tsis muaj tam sim no yuav ntws. Qhov no yog vim li cas voltmeters muab tso rau hauv parallel rau hauv Circuit Court, tsis nyob rau hauv series. Ammeter yog muab tso rau hauv series txawm li cas los xij thiab muaj tsawg tsis kam.

Vim li cas potentiometer hu ua qhov zoo tagnrho voltmeter?

Lub potetiometer yog hu ua ib qho zoo tagnrho voltmeter vim tsis zoo li voltmeter ntsuas nws tsis kos tam sim no los ntawm lub ntsiab Circuit Court. Cov voltmeter ntsuas kos tam sim no los ntawm lub ntsiab Circuit Court los ntsuas qhov voltage thoob plaws hauv Circuit Court. Yog li hauv a potentiometer , tam sim no twb ntws thiab qhov voltage poob tsuas yog ntsuas.

Pom zoo: