Cov teeb meem hluav taws xob sib luag tuaj yeem daws tau yooj yim yog tias koj nkag siab cov qauv yooj yim thiab cov hauv paus ntsiab lus ntawm kev sib txuas sib nqus. Yog tias 2 lossis ntau qhov teeb meem txuas nrog ib sab, qhov hluav taws xob tuaj yeem "xaiv" txoj hauv kev (ib yam li lub tsheb nyiam hloov txoj kab thiab tsav ib sab yog tias 1 txoj kab kev sib faib ua 2 txoj kab). Tom qab kawm cov kab lus no, koj yuav tuaj yeem suav tus nqi ntawm qhov hluav taws xob, tam sim no, thiab kev tiv thaiv rau 2 lossis ntau tus tiv thaiv txuas nrog ua ke.
Cov qauv yooj yim
- Cov mis tsis kam tag nrho RT Circuit Court tib yam: 1/RT = 1/R1 + 1/R2 + 1/R3 + …
- Tus nqi ntawm qhov hluav taws xob hluav taws xob hauv txhua ceg ntoo ntawm qhov sib txuas ua ke ib txwm zoo ib yam: V.T = V1 = V2 = V3 = …
- Tus nqi ntawm tag nrho cov hluav taws xob tam sim no I.T = Kuv1 + Kuv2 + Kuv3 + …
- Ohm's Law Formula: V = IR
Kauj ruam
Ntu 1 ntawm 3: Nkag Siab Qhov Sib Txawv Zoo Li Cas
Kauj Ruam 1. Txheeb xyuas cov kab hluav taws xob sib luag
Ib txoj kab hluav taws xob sib npaug muaj 2 lossis ntau ceg ntoo txhua qhov uas tshwm sim los ntawm taw tes A thiab mus rau taw tes B. Ib qho kwj ntawm cov hluav taws xob sib faib ua ntau ceg thiab tom qab ntawd koom nrog. Feem ntau cov teeb meem kev sib tw nug tus nqi ntawm tag nrho qhov hluav taws xob, kev tiv thaiv, lossis hluav taws xob tam sim no hauv Circuit Court (los ntawm taw tes A mus rau taw tes B).
Cheebtsam uas "sib sau ua ke" yog txhua qhov nyob ntawm ib ceg cais
Kauj Ruam 2. Nkag siab txog kev tiv thaiv thiab hluav taws xob tam sim no hauv cov kab hluav taws xob
Xav txog txoj kev loj uas muaj ntau txoj kab thiab cov neeg hu xov tooj nyob hauv txhua txoj kab ua rau cov tsheb khiav qeeb. Tsim txoj kab tshiab muab txoj kab ntxiv rau cov tsheb kom cov tsheb khiav mus los tau yooj yim dua txawm hais tias tus neeg hu xovtooj tseem tsim nyob hauv txoj kab tshiab. Yog li, ib yam li hauv kev sib tw Circuit Court, ntxiv ib ceg tshiab muab txoj hauv kev tshiab rau hluav taws xob tam sim no. Tsis hais txog qhov kev tawm tsam hauv cov ceg ntoo tshiab, tag nrho cov kev tawm tsam txo qis thiab tag nrho cov amperage nce ntxiv.
Kauj Ruam 3. Ntxiv cov amperage ntawm txhua ceg kom pom tag nrho cov amperage
Yog tias amperage hauv txhua ceg tau paub, tsuas yog ntxiv nws kom tau txais tag nrho amperage. Tag nrho cov hluav taws xob tam sim no yog tus nqi hluav taws xob uas ntws los ntawm Circuit Court tom qab txhua ceg tau rov qab los ua ke. Cov qauv rau tag nrho cov hluav taws xob tam sim no: I.T = Kuv1 + Kuv2 + Kuv3 + …
Kauj Ruam 4. Xam tag nrho tus nqi tiv thaiv
Txhawm rau kom paub tag nrho tus nqi tiv thaiv RT sib npaug ntawm Circuit, siv qhov kev ua zauv 1/RT = 1/R1 + 1/R2 + 1/R3 +… Txhua R ntawm sab xis ntawm qhov sib npaug sawv cev rau tus nqi tiv thaiv hauv 1 ceg ntoo ntawm kev sib txuas ua ke.
- Piv txwv: ib qho Circuit Court muaj 2 tus tiv thaiv txuas nrog ua ke, txhua tus muaj 4 value. 1/RT = 1/4Ω + ib 1/4 Ω → 1/RT = 1/2Ω → R ibT = 2 Ω ib. Hauv lwm lo lus, 2 ceg ntoo uas muaj kev tiv thaiv zoo ib yam yog ob zaug yooj yim dua hla 1 ceg ntoo ib leeg.
- Yog tias ib ceg tsis muaj kev tiv thaiv (0Ω), txhua qhov hluav taws xob tam sim no yuav dhau los ntawm cov ceg ntawd kom tag nrho cov nqi tiv thaiv = 0.
Kauj Ruam 5. Nkag siab tias qhov hluav taws xob yog dab tsi
Qhov hluav taws xob yog qhov sib txawv ntawm cov peev xwm hluav taws xob ntawm 2 cov ntsiab lus. Txij li nws piv 2 cov ntsiab lus es tsis txhob ntsuas txoj kev ntws, qhov hluav taws xob tus nqi tseem zoo ib yam hauv ib ceg twg. VT = V1 = V2 = V3 = …
Kauj Ruam 6. Siv Ohm Txoj Cai
Ohm txoj cai piav qhia kev sib raug zoo ntawm qhov hluav taws xob V, tam sim no kuv, thiab tsis kam R: V = IR. Yog tias ob ntawm peb qhov txiaj ntsig tau paub, siv cov mis no los nrhiav tus nqi thib peb.
Nco ntsoov tias txhua tus nqi los ntawm tib feem ntawm koob. Ntxiv rau kev nrhiav tus nqi hauv ib ceg (V = I1R1), Ohm Txoj Cai kuj tseem tuaj yeem siv los suav tag nrho cov nqi hluav taws xob (V = ITRT).
Ntu 2 ntawm 3: Cov Lus Nug Piv Txwv
Kauj Ruam 1. Ua ib lub rooj los sau cov suav
Yog tias cov teeb meem sib txuas ua ke nug txog ntau dua ib tus nqi, lub rooj pab koj npaj cov ntaub ntawv. Nram qab no yog ib qho piv txwv ntawm cov rooj sib txoos ua ke nrog 3 ceg. Cov ceg ntoo feem ntau sau ua R raws li tus lej sau me thiab qis dua.
| R1 | R2 | R3 | Tag nrho | Chav nyob | |
|---|---|---|---|---|---|
| V | qhov hluav taws xob | ||||
| Kuv | ampere tso | ||||
| R | ohm ua |
Kauj Ruam 2. Sau rau qhov paub qhov muaj nuj nqis
Piv txwv li, ib qho kev sib tw siv lub roj teeb 12 volt. Lub voj voog no muaj 3 ceg sib luag, txhua qhov muaj kev tiv thaiv ntawm 2Ω, 4Ω, thiab 9Ω. Sau rau hauv lub rooj txhua qhov paub qhov muaj nuj nqis:
| R1 | R2 | R3 | Tag nrho | Chav nyob | |
|---|---|---|---|---|---|
| V | Kauj ruam 12. | qhov hluav taws xob | |||
| Kuv | ampere tso | ||||
| R | Kauj ruam 2. | Kauj ruam 4. | Kauj ruam 9. | ohm ua |
Kauj Ruam 3. Luam qhov hluav taws xob qhov tseem ceeb hauv txhua ceg
Nco ntsoov, tus nqi ntawm qhov hluav taws xob hla tag nrho cov Circuit Court yog tib yam li tus nqi ntawm qhov hluav taws xob hla txhua ceg ntawm kev sib tw Circuit Court.
| R1 | R2 | R3 | Tag nrho | Chav nyob | |
|---|---|---|---|---|---|
| V | Kauj ruam 12. | Kauj ruam 12. | Kauj ruam 12. | Kauj ruam 12. | qhov hluav taws xob |
| Kuv | ampere tso | ||||
| R | 2 | 4 | 9 | ohm ua |
Kauj Ruam 4. Siv Ohm's Law formula los nrhiav qhov amperage ntawm txhua ceg
Txhua kab lus ntawm lub rooj suav nrog qhov hluav taws xob, tam sim no, thiab tsis kam. Ntawd yog, qhov tsis paub tus nqi tuaj yeem nrhiav tau ntev li ob qhov txiaj ntsig hauv tib kab lus tau paub. Nco ntsoov, Ohm's Law formula is V = IR. Qhov tsis paub tus nqi hauv peb qhov piv txwv yog hluav taws xob. Yog li, cov qauv tuaj yeem hloov mus rau I = V/R
| R1 | R2 | R3 | Tag nrho | Chav nyob | |
|---|---|---|---|---|---|
| V | 12 | 12 | 12 | 12 | qhov hluav taws xob |
| Kuv | 12/2 = 6 | 12/4 = 3 | 12/9 = ~1, 33 | ampere tso | |
| R | 2 | 4 | 9 | ohm ua |
Kauj Ruam 5. Xam tag nrho cov hluav taws xob tam sim no
Tag nrho cov hluav taws xob tam sim no nrhiav tau yooj yim vim tias nws yog qhov suav tag nrho ntawm cov dej ntws ntawm txhua ceg.
| R1 | R2 | R3 | Tag nrho | Chav nyob | |
|---|---|---|---|---|---|
| V | 12 | 12 | 12 | 12 | qhov hluav taws xob |
| Kuv | 6 | 3 | 1, 33 | 6 + 3 + 1, 33 = 10, 33 | ampere tso |
| R | 2 | 4 | 9 | ohm ua |
Kauj Ruam 6. Xam tag nrho kev tiv thaiv
Kev tiv thaiv tag nrho tuaj yeem suav ua ob txoj hauv kev. Txoj kab kev tiv taus tuaj yeem siv los xam tag nrho kev tawm tsam nrog cov kab zauv 1/RT = 1/R1 + 1/R2 + 1/R3. Txawm li cas los xij, tag nrho cov kev tawm tsam feem ntau yooj yim los suav nrog Ohm's Law formula uas siv tag nrho V thiab I tag nrho cov txiaj ntsig. Txhawm rau suav qhov tsis kam, hloov Ohm's Law formula rau R = V/I
| R1 | R2 | R3 | Tag nrho | Chav nyob | |
|---|---|---|---|---|---|
| V | 12 | 12 | 12 | 12 | qhov hluav taws xob |
| Kuv | 6 | 3 | 1, 33 | 10, 33 | ampere tso |
| R | 2 | 4 | 9 | 12 / 10, 33 = ~1.17 | ohm ua |
Ntu 3 ntawm 3: Teeb meem kev hloov pauv
Kauj Ruam 1. Xam hluav taws xob
Ib yam li hauv lwm qhov kev siv hluav taws xob, lub zog hluav taws xob tuaj yeem suav los ntawm qhov sib npaug P = IV. Yog tias lub zog hauv txhua ceg tau suav, tag nrho lub zog P.T sib npaug rau qhov sib npaug ntawm lub zog ntawm txhua ceg (P1 + P.2 + P.3 + …).
Kauj Ruam 2. Xam tag nrho cov kev tawm tsam ntawm ob txoj kab sib txuas ua ke
Yog tias kev sib tw Circuit Court tsuas muaj ob qhov kev tawm tsam, cov qauv rau kev tiv thaiv tag nrho tuaj yeem ua kom yooj yim rau:
RT = R ib1R2 / (Rau1 + R2)
Kauj Ruam 3. Xam tag nrho kev tiv thaiv yog tias qhov txiaj ntsig ntawm txhua qhov kev tawm tsam zoo ib yam
Yog tias txhua qhov kev tawm tsam hauv kev sib tw Circuit Court muaj tus nqi zoo ib yam, tus lej rau kev tiv thaiv tag nrho yuav yooj yim dua: RT = R ib1 / N. N yog tus naj npawb ntawm kev tawm tsam hauv Circuit Court.
Piv txwv li: ob tus nqi sib npaug resistors txuas nrog ua ke muab tag nrho kev tiv thaiv ntawm ib qho kev tiv thaiv. Yim sib npaug tus nqi teeb meem muab tag nrho kev tiv thaiv ntawm ib qho kev tawm tsam
Kauj Ruam 4. Xam cov hluav taws xob tam sim no hauv cov kab hluav taws xob uas tsis siv hluav taws xob
Ib qho kev ua zauv hu ua Kirchhoff Txoj Cai Tam Sim No tso cai rau tus nqi ntawm amperage ntawm txhua ceg kom pom txawm tias qhov hluav taws xob hluav taws xob tsis paub. Txawm li cas los xij, qhov tsis kam ntawm txhua ceg thiab tag nrho cov hluav taws xob tam sim no yuav tsum paub.
- Parallel Circuit nrog 2 resistances: I.1 = KuvTR2 / (Rau1 + R2)
- Parallel Circuit nrog ntau dua 2 resistances: los laij kuv1, nrhiav tag nrho qhov tsis kam ntawm txhua qhov kev tawm tsam tshwj tsis yog R1. Siv cov txheej txheem tiv thaiv kab mob sib kis. Tom ntej no, siv cov qauv saum toj no, nrog koj cov lus teb sau ua R2.
Lub tswv yim
- Yog tias koj tab tom ua haujlwm ntawm cov teeb meem sib xyaw ua ke (series-parallel) teeb meem, suav ua ntu ntu ua ntej. Tom ntej no, koj tsuas yog yuav tsum suav ib feem ntawm koob, uas yooj yim dua.
- Hauv kev sib tw Circuit Court, qhov hluav taws xob zoo ib yam thoob plaws txhua qhov kev tawm tsam.
- Yog tias koj tsis muaj lub laij lej, kev tiv thaiv tag nrho hauv qee qhov kev sib tw tuaj yeem nyuaj rau suav nrog siv tus lej R1, R2, lwm yam Yog tias qhov xwm txheej no, siv Ohm's Law formula los laij cov amperage ntawm txhua ceg.
- Ohm's Law formula kuj tseem tuaj yeem sau E = IR lossis V = AR; cov cim sib txawv, tab sis lub ntsiab lus zoo ib yam.
- Kev tiv thaiv tag nrho kuj tseem hu ua "sib npaug tiv taus".
