Isihloko mayelana nama-Resistors ngesikhathi esifanayo
Uma ama-resistor exhunywe njengasesithombeni, ama-resistor axhunywe ngokuhambisana.
Ugesi kagesi (ugesi kagesi = ukushaja kagesi okugeleza ngesikhathi esithile) okungena endaweni yokuhlangana ufana nogesi kagesi ophuma endaweni yokuhlangana. Kunezindawo eziningana zokuhlangana ukuze ugesi ophelele = inani logesi kagesi olugeleza endaweni ngayinye yokuhlangana. Ngokwezibalo, I = I 1 + I 2 + I 3 . Ngenkathi umehluko wamandla kagesi noma i-voltage kagesi endaweni ngayinye yokuhlangana ifana.
I = V/R ngakho-ke i-equation engenhla ishintsha ibe yi-I = V/R 1 + V/R 2 + V/R 3 . I-voltage kagesi ilingana, ngakho-ke lesi sibalo sishintsha sibe yi-I = V (1/R 1 + 1/R 2 + 1/R 3 ). Uma ukumelana okulinganayo kungu-1/R khona-ke I = V (1/R). Ngakho-ke, 1/R = 1/R 1 + 1/R 2 + 1/R 3.
Amasekethe ahambisanayo anenzuzo, uma ugesi kwenye yama-resistor uphukile, ugesi uyaqhubeka nokugeleza uye kwamanye ama-resistor. Kanti ngokulandelana, uma ugesi kwenye i-resistor uphukile, khona-ke wonke ama-resistor ngeke afakwe ugesi.
Inkinga yesampula 1:
Kuyaziwa ukuthi u-R1 = 2 Ω, R2 = 3 Ω. Womabili ama-resistor ahambisana. Liyini inani le-resistor elinganayo? (Ω = Ohm).
Isixazululo:
1/R = 1/R1 +1/R2 = 1/2 + 1/3 = 3/6 + 2/6 = 5/6
R = 6/5 = 1.2 Ω.
Lo mphumela ubonisa ukuthi inani elilinganayo le-resistor lincane kunenani le-resistor ngayinye ehambisanayo.
Inkinga yesampula 2:
Ama-R amabili1 = Ama-resistors angu-50 Ω nama-resistor angu-50 axhunywe ngochungechunge futhi ahambisanayo, axhunywe ebhethrini le-12 Volt. Thola:
(a) Ukumelana okulinganayo
(b) Amandla kagesi adlula ku-resistor ngayinye
Isixazululo:
(a) Ama-Resistors alandelanayo:
R = R 1 + R 2 = 50 Ω + 50 Ω = 100 Ω.
Ama-resistors ahambisanayo:
1/R = 1/R1 +1/R2 = 1/50 + 1/50 Ω = 2/50
R = 50/2 = 25 Ω
(b) Ama-Resistors alandelanayo:
I = V / R = 12 Volts / 100 Ω = 0.12 A
Ama-resistors ahambisanayo:
I = V / R = 12 Volts / 25 Ω = 0.48 A
Lo mphumela ubonisa ukuthi ugesi ophelele ogeleza kusekethe ehambisanayo mkhulu, kanti ugesi ophelele ogeleza ochungechungeni mncane.
