Cov txheej txheem:

Txoj Cai Ohms rau Dummies: 5 Kauj Ruam
Txoj Cai Ohms rau Dummies: 5 Kauj Ruam

Video: Txoj Cai Ohms rau Dummies: 5 Kauj Ruam

Video: Txoj Cai Ohms rau Dummies: 5 Kauj Ruam
Video: Tsis Tau Txaus Koj | Kong Chue (Official Music Video) 2024, Kaum ib hlis
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Ohms Law rau Dummies
Ohms Law rau Dummies

Hav! Tsis txhob nyuaj rau koj tus kheej!

Koj tsis ruam! Kev siv hluav taws xob yog lub tswv yim nyuaj heev kom nkag siab, uas yog vim li cas niaj hnub no koj yuav kawm los ntawm kuv (A Dummy), yuav ua li cas kuv thiaj kawm tau cov hauv paus ntawm hluav taws xob. Mob txiav tawm txhua qhov tshaj thiab tso koj nrog tsuas yog cov hauv paus yooj yim.

Hnub no Kuv yuav npog tsuas yog qhia luv luv rau hluav taws xob, peb yuav npog

  1. Dab tsi yog hluav taws xob?
  2. Voltage Tam Sim No Kuj thiab Lub Hwj Chim
  3. Kev sib raug zoo ntawm algebraic rau ib leeg Ohms Law
  4. Thiab Kuv txoj hauv kev nyiam daws teeb meem hauv Circuit!

Vim li cas koj yuav tsum mloog kuv? Kuv yog tus kws kho hluav taws xob rau 6 xyoo thiab kuv ib zaug zaum hauv koj qhov chaw! Kuv xav nkag siab txog hluav taws xob, tab sis tib neeg tseem siv cov ntsiab lus loj thiab cov tswv yim txawv teb chaws uas tau hla kuv lub taub hau! Yog li hnub no Kuv yuav qhia koj qhov kuv xav kom ib tus neeg qhia kuv thaum kuv tab tom pib. Cov hauv paus, tab sis..basic-er

Kauj Ruam 1: Dab Tsi Yog Hluav Taws Xob?

Dab Tsi Yog Hluav Taws Xob?
Dab Tsi Yog Hluav Taws Xob?
Hluav Taws Xob Yog Dab Tsi?
Hluav Taws Xob Yog Dab Tsi?
Dab Tsi Yog Hluav Taws Xob?
Dab Tsi Yog Hluav Taws Xob?

Hluav taws xob yog kev txav ntawm hluav taws xob. Qhov ntawd yog nws. Yooj yim txaus txoj cai?

Tsis muaj kev sib sib zog nqus dhau, txhua yam hauv ntiaj teb tag nrho yog ua los ntawm atoms. Ntawm qhov tseem ceeb ntawm lub atom koj muaj Protons thiab neutrons, thiab hauv huab ib puag ncig lawv yog cov hluav taws xob!

Nov yog qhov khoom. Electrons tsis nyiam sib. Cov hluav taws xob muaj qhov tsis zoo - them nqi, thiab thaum koj tso lawv ua ke lawv zoo li thawb ib leeg!

Tab sis, Cov Hluav Taws Xob nyiam Protons! Protons muaj qhov zoo + them, tab sis tsis tuaj yeem txav mus los yooj yim li cov tshuab hluav taws xob tuaj yeem ua tau. Yog li yog tias koj muab lub tshuab hluav taws xob thiab proton ua ke, lub tshuab hluav taws xob yuav txav mus rau qhov proton! Hluav taws xob!

Nco qab cov lus qub? Yam txawv nyiam?

Yog li nrog qhov tawm ntawm txoj kev, tam sim no peb tuaj yeem nkag mus rau lub tsev tsim hluav taws xob (yooj yim heev rau peb cov lus qhia)

  1. Voltage: Qhov tsis sib xws ntawm tus nqi ntawm ob lub ntsiab lus
  2. Tam sim no: Tus naj npawb ntawm cov hluav taws xob ntws dhau ib qho taw tes
  3. Kuj: Kuj rau qhov ntws ntawm cov hluav taws xob
  4. Fais fab: Hloov cov hluav taws xob hluav taws xob mus rau lwm daim ntawv

Thiab peb ntsuas lawv li cas

  1. Voltage: Ntsuas hauv Volts (V)
  2. Tam sim no: Ntsuas hauv Amps (A)
  3. Kuj: Ntsuas hauv Ohms (Ω)
  4. Hwj chim: Ntsuas hauv Watts (W)

Thiab lawv cov cim

  1. Voltage: Muab lub cim (E lossis V) rau Electromotive Force lossis Volts
  2. Tam sim no: Muab lub cim (I) rau qhov siv zog ntws
  3. Kuj: Muab lub cim (R) rau Kuj
  4. Lub Hwj Chim: Muab lub cim (P) rau Lub Hwj Chim

Nco ntsoov qhov no tsuas yog thiab qhia tawm thiab koj tuaj yeem nkag siab ntau ntxiv hauv koj cov lus piav qhia thiab txhais cov ntsiab lus no txawm li cas los xij, vim li cas ho tsis cia nws yooj yim?

Yog li lawv ua haujlwm ua ke li cas?

Kuv txoj kev nyiam piav qhia qhov no yog xav txog hluav taws xob zoo li lub tank dej hla hla lub qhov dej. Lub zog nias hauv dej, lossis lub siab yog Voltage. Vim tias qhov kev ntsuas siab no, cov dej yuav ntws mus, cov dej ntws yog Amperage. Tab sis ntawm ib kis hauv qhov dej, muaj kink! Tsawg dej tuaj yeem ntws los ntawm no, ua rau Kev Tiv Thaiv. Tam sim no xav txog koj txau cov dej ntawm lub pas dej, ua rau nws tig, Lub zog!

Tam sim no koj paub cov ntsiab lus, peb tuaj yeem nkag mus rau hauv kev ua lej

Kauj Ruam 2: Txoj Cai Ohms

Lawm Law
Lawm Law
Lawm Law
Lawm Law
Lawm Law
Lawm Law

Txoj cai Ohms piav qhia yuav ua li cas Voltage, Tam sim no thiab Kuj cuam tshuam txog algebraically, hais txog

Voltage (E) = Tam sim no (I) sib npaug los tiv thaiv (R)

E = IR

lossis koj tuaj yeem sau nws ntau txoj hauv kev

Kuv = E/R R = E/kuv

Yog li cia ua piv txwv, Peb muaj lub voj voog suav nrog 12v Roj Teeb thiab tus tiv thaiv ntsuas 2 Ohms. Yog tias peb ntsaws qhov no rau hauv peb qhov sib npaug nws yuav tsum zoo li no: 12v = I (2Ω). Faib 12v/2Ω thiab kuv = 6. 6 Amps yuav ntws!

Tam sim no cia sim nws dua, Lub sijhawm no koj siv tib lub roj teeb 12v, tab sis lub sijhawm no koj tsis paub qhov ua haujlwm! Siv lub ammeter, koj ntsuas qhov ntws ntawm 1 amp, qhov kev tiv thaiv ntau npaum li cas? Txuas nws rau hauv peb qhov kev sib npaug: R = 12v/1A thiab peb tau R = 12Ω!

Ib qho kawg, lub sijhawm no peb txuas lub xov tooj hluav taws xob ntawm qhov tsis paub qhov hluav taws xob (Tsis txhob ua qhov no los ntawm txoj kev) Koj paub qhov Kev Tiv Thaiv yog 6Ω thiab koj ntsuas qhov ntws raws li 2 Amps. Txuas nws rau hauv peb qhov kev sib npaug E = 2a*6Ω thiab peb tau txais 12v! Qhov ntawd yooj yim txaus txoj cai?

Tam sim no ntawm no yog qhov kev lom zem me ntsis Kos lub voj voog thiab kos kab kab rov tav nyob nruab nrab. Tawm ib nrab sab saum toj ib leeg thiab kos kab ib kab nyob nruab nrab ntawm ib nrab hauv qab. Koj yuav tsum muaj qhov phem tshaj saib kev thaj yeeb uas koj tau kos dua! Txawm li cas los xij qhov no muaj txiaj ntsig, ntseeg kuv! Nyob rau ib nrab saum toj sau E, nyob rau hauv qab sab laug hauv qab muab tus I, thiab lub quarter sab xis tso rau R. Tam sim no, nyob ntawm tus nqi koj xav tau, tso koj tus ntiv tes xoo hla lub cim thiab koj yuav tau txais koj cov lus teb! Piv txwv li koj xav tau qhov hluav taws xob? Npog tus E thiab koj tshuav nrog kuv sib tw R! Koj xav tau Kuj? Npog R thiab koj nyob nrog E/I!

Zoo nkauj heev huh?

Tam sim no cia ntxiv lub zog rau hauv qhov sib npaug!

Kauj Ruam 3: Lub Hwj Huam Lub Npe

Lub Hwj Chim Formula
Lub Hwj Chim Formula
Lub Hwj Chim Formula
Lub Hwj Chim Formula

Cov qauv mis yog yooj yim raws li txoj cai ohms

Fais fab (P) yog sib npaug rau tam sim no (I) sib npaug los ntawm Voltage (E)

lossis P = IE, peb tuaj yeem sau qhov no ib yam li peb tau ua nrog txoj cai ohms!

I = P/E thiab E = P/I

Cia ua piv txwv!

Lub voj voog muaj lub roj teeb 12v thiab tam sim no ntws ntawm 2 Amps. Los ntawm ntsaws qhov no rau hauv peb lub zog mis P = (2A) (12v) thiab peb tau txais 24 Watts! Wow! Feem ntau zoo li lub zog tau hloov pauv mus rau qhov sov los ntawm peb qhov kev sib tw!

thiab lwm qhov piv txwv yog siv tib lub roj teeb 12v hauv lub voj voog, peb siv wattmeter thiab ntsuas 48 watts! Muaj dej ntau npaum cas? Txuas qhov peb paub rau hauv peb lub zog mis, peb tau txais (48W) = I (12v), muab rau peb 4 Amps tam sim no!

thiab kawg tab sis tsis tsawg kawg cia hais hauv Circuit Court uas tsis paub qhov hluav taws xob, koj ntsuas 240 Watts thiab qhov tam sim no ntws ntawm 1 amp, qhov siv hluav taws xob yog dab tsi? Plug nws hauv peb tau txais E = (240w)/(1A), muab rau peb 240 Volts! Ouch!

Tsis tas li nws yog qhov tseem ceeb kom nco ntsoov tias koj tuaj yeem ntsaws qhov no rau hauv lub voj voos peb kos zaum kawg, tsuas yog hloov E rau P thiab R rau E

Tab sis tam sim no cia mus rau kuv txoj kev nyiam ntawm txoj cai ohms!

Kauj ruam 4: PEB

PEB
PEB
PEB
PEB

PEIR yuav daws txhua yam koj cov teeb meem! Hauv kuv lub tswv yim nws yog txoj hauv kev zoo tshaj plaws tab sis neeg feem coob tsis tau siv PEIR

Thawj sau PEIR ntsug

P (Hwj chim)

E (Qhov Voltage)

Kuv (Tam sim no)

R (Kuj)

Thiab sau cov txiaj ntsig uas koj paub, Cia peb hais tias peb muaj 120v nrog kev tiv thaiv ntawm 60Ω, ntsaws rau hauv!

P = yog?

E = 120v

Kuv =?

R = 60 hli

Tam sim no kom nce nrog PEIR peb sib npaug, thiab nqis mus, peb faib. Yog li cia pib los ntawm kev tawm tsam thiab nce mus. 60Ω sib tw los ntawm tus lej tsis paub yuav muab rau peb 120v. 120v = 60Ω*Kuv, yog li peb tau txais 2 Amps! Yog li peb ntsaws rau hauv!

P =? E = 120v

Kuv = 2A

R = 60 hli

Tam sim no cia kom muaj hwj chim! Nco ntsoov nce txhais tau tias koj sib npaug thiab nqis qis txhais tau tias faib, yog li 120v sib npaug 2 Amps yuav tsum muab peb lub zog rau peb, 240 Watts!

P = 240 W

E = 120v

Kuv = 2A

R = 60 hli

Thiab nws yog!

Kauj Ruam 5: Tshooj Lus Ntxiv?

Zaj Lus Qhia Ntxiv?
Zaj Lus Qhia Ntxiv?

Thiab yog li koj tuaj yeem siv Ohms Law los daws teeb meem!

Qhov ntawd tsis nyuaj txhua yog nws? Koj tsuas yog coj koj thawj kauj ruam mus rau hauv lub ntiaj teb hluav taws xob! Nrog koj zoo siab!

Txawm li cas los xij, tsis txhob nres ntawm no! Muaj ntau yam ntxiv los kawm, Kuv pom zoo pib nrog cov neeg siv qhia paub RANDOFO cov lus qhia ntawm cov khoom siv hluav taws xob

Thiab tej zaum yog tias kuv tuaj yeem nrhiav qee lub sijhawm ntxiv Ua lwm zaj lus qhia rau koj!

Qhia rau kuv paub yog tias koj xav tau lwm zaj lus qhia! Mus tom ntej Series Vs Parallel?

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