Tsis tas li ntawd kawm cov ntaub ntawv ntawm kev tiv thaiv hluav taws xob , piv txwv ntawm cov teeb meem resistor series , piv txwv ntawm cov teeb meem resistor parallel.
2 Piv txwv ntawm Cov Lus Nug Txog Kev Tiv Thaiv Hluav Taws Xob
1. Ib lub cuab yeej hluav taws xob txuas nrog lub zog fais fab 30 Volt thiab nqa hluav taws xob ntawm 2 Amperes. Txheeb xyuas qhov tsis kam hluav taws xob ntawm lub cuab yeej!
Kev Sib Tham
Nws paub tias:
Lub zog hluav taws xob (V) = 30 Volts
Tam sim no hluav taws xob (I) = 2 Ampere
Lus Nug: Hluav taws xob tsis kam (R)
Lus teb:
Cov qauv hluav taws xob tsis kam:
R = V / Kuv
Kev piav qhia: R = hluav taws xob tsis kam, V = hluav taws xob voltage, I = hluav taws xob tam sim no.
R = 30 Volts / 2 Amps = 15 Volts/Amperes = 15 Ω (nyeem: Ohms).
2. Xam qhov hluav taws xob tsis kam ntawm ntau tus neeg hlau uas muaj ntev li 1 'meter' thiab thaj tsam ntawm 1 x 10 -5 m2 . Qhov tsis kam ntawm cov neeg hlau tau teev nyob rau hauv lub rooj hauv qab no.
Kev Sib Tham
Cov qauv hluav taws xob tsis kam:
Kev piav qhia: R = hluav taws xob tsis kam, ρ = kev tsis kam tshwj xeeb, l = ntev ntawm tus neeg xyuas pib, A = thaj tsam hla ntawm tus neeg xyuas pib.
