Cov txheej txheem:

Yuav ua li cas koj xam tam sim no nrog voltage thiab kuj?
Yuav ua li cas koj xam tam sim no nrog voltage thiab kuj?

Video: Yuav ua li cas koj xam tam sim no nrog voltage thiab kuj?

Video: Yuav ua li cas koj xam tam sim no nrog voltage thiab kuj?
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Ohms Txoj Cai thiab Lub Zog

  1. Txhawm rau nrhiav qhov Voltage, (V ) [V = I x R] V (volts) = I (amps) x R (Ω)
  2. Rau nrhiav Tam sim no, (I) [I = V ÷ R] I (amps) = V (volts) ÷ R (Ω)
  3. Txhawm rau nrhiav qhov Resistance, (R) [R = V ÷ I] R (Ω) = V (volts) ÷ I (amps)
  4. Kom pom lub hwj chim (P) [P = V x I] P (watts) = V (volts) x I (amps)

Ib yam li ntawd, tus qauv rau tam sim no yog dab tsi?

Cov tam sim no tuaj yeem pom los ntawm Ohm Txoj Cai, V = IR. Lub V yog lub roj teeb voltage, yog li yog R tuaj yeem txiav txim siab ces tus tam sim no tuaj yeem suav tau. Thawj kauj ruam, tom qab ntawd, yog nrhiav qhov tsis kam ntawm cov hlau: L yog qhov ntev, 1.60 m.

Ib tug kuj yuav nug, dab tsi yog qhov sib npaug rau tam sim no muaj peev xwm sib txawv thiab tsis kam? Rau xam tus tsis kam ntawm cov khoom siv hluav taws xob, ammeter yog siv los ntsuas qhov tam sim no thiab ib tug voltmeter los ntsuas qhov muaj peev xwm sib txawv . Cov tsis kam Tom qab ntawd tuaj yeem suav nrog Ohm Txoj Cai.

Nyob rau hauv no hais txog, dab tsi yog qhov tseeb xam rau kev tiv thaiv thaum tam sim no yog 4 amps thiab qhov voltage yog 24 volts?

a) 24 volt – 4amps ua = 20 awm. b) 24 volt + 4amps ua = 28 awm. c) 24 volt × 4amps ua = 96 awm.

Dab tsi yog txhais los ntawm 1 ampere?

Ib ampere yog ib chav ntsuas ntawm tus nqi ntawm electron ntws los yog tam sim no nyob rau hauv ib tug hluav taws xob conductor. Ib ampere ntawm tam sim no sawv cev ib coulomb ntawm hluav taws xob nqi (6.24 x 1018 tus nqi thauj khoom) txav dhau los ntawm qhov tshwj xeeb hauv ib thib ob. Cov ampere muaj npe tom qab Andre Marie Ampere , Fabkis physicist (1775-1836).

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