Tsab xov xwm hais txog Resistors hauv series
Yog tias cov resistors txuas nrog raws li pom hauv daim duab, cov resistors raug teeb tsa ua series. Resistor lossis hluav taws xob tsis kam hauv nqe lus nug tuaj yeem yog nyob rau hauv daim ntawv ntawm cov khoom resistor, teeb, lossis lwm yam hluav taws xob tsis kam.
Lub zog hluav taws xob txav mus los ntawm qhov tsis kam 1 (R1) = ua hluav taws xob txav mus los ntawm kev tiv thaiv 2 (R2) = lub zog hluav taws xob txav mus los ntawm qhov tsis kam 3 (R3). Hluav taws xob tam sim no (Kuv) yog lub zog hluav taws xob uas ntws thaum lub sijhawm tshwj xeeb (I = Q / t), yog li ntawd lub zog hluav taws xob los ntawm kev tiv thaiv 1 (I1) = tam sim no hluav taws xob los ntawm kev tiv thaiv 2 (I2) = tam sim no hluav taws xob los ntawm kev tiv thaiv 3 (I3). Kev suav lej, tag nrho cov hluav taws xob tam sim no (I) = Kuv1 = Kuv2 = Kuv3.
Ntawm qhov tod tes, qhov hluav taws xob fais fab (V) txo qis thaum lub zog hluav taws xob txav mus los ntawm txhua lub resistor. Lub zog hluav taws xob tseem hu ua qhov sib txawv ntawm lub zog hluav taws xob, yog lub zog hluav taws xob rau ib chav ntawm lub zog hluav taws xob. Lub zog hluav taws xob raug txo qis vim tias hluav taws xob siv rau hauv txhua qhov tsis kam hluav taws xob. Yog li, tag nrho lub zog hluav taws xob (V) yog sib npaug rau qhov ntau ntawm hluav taws xob hauv txhua lub resistor. Hauv lej, tag nrho lub zog hluav taws xob (V) = V1 +V2 +V3. V = IR yog li ntawd qhov sib npaug ntawm lub zog hluav taws xob yog V = IR1 + IR2 + IR3. Cov hluav taws xob uas ntws rau ntawm txhua lub resistor yog sib npaug zos kom cov kab zauv no hloov mus rau V = I (R1 + R2 + R3).
Raws li qhov sib npaug saum toj no, nws tuaj yeem xaus lus tias tag nrho cov hluav taws xob tsis kam (R) lossis qhov sib npaug ntawm cov hluav taws xob tsis kam
uas txuas ua ke hauv series yog sib npaug rau qhov sib npaug ntawm txhua qhov hluav taws xob tsis kam, lej R = R1 + R2 + R3Yog tias tsuas muaj ob lub resistors hauv series, qhov sib npaug resistor (R) = R1 + R2Yog tias muaj plaub lub resistors nyob rau hauv series, qhov sib npaug resistor (R) = R1 + R2 + R3 + R4Ib yam li ntawd, yog tias muaj tsib lossis ntau dua tsib lub resistors uas txuas nrog ua ke.
Piv txwv teeb meem 1:
Yog paub, R 1 = 2 Ω, R 2 = 3 Ω thiab R 3 = 4 Ω. Tag nrho peb lub resistors txuas ua ke. Tus nqi ntawm qhov sib npaug resistor yog dab tsi? (Ω = Ohm ).
tshuaj:
R = R 1 + R 2 + R 3 = 2 + 3 + 4 = 9 Ω.
Qhov tshwm sim no qhia tau hais tias qhov sib npaug tsis kam yog ntau dua li tus nqi ntawm cov resistors txuas nrog hauv series.
Piv txwv teeb meem 2:
Ob lub resistors R 1 = 50 Ω thiab 50 Ω txuas ua ke thiab txuas nrog lub roj teeb 12 Volt. Txheeb xyuas seb
(a) Qhov sib npaug ntawm kev tiv thaiv
(b) Tam sim no hluav taws xob hla txhua lub resistor
tshuaj:
(a) R = R 1 + R 2 = 50 Ω + 50 Ω = 100 Ω.
(b) Kuv = V / R = 12 Volts / 100 Ω = 0.12 A
