Dzidzawo mienzaniso yezvinopikisa zvakafanana uye mienzaniso yezvinopikisa zvakatevedzana.
Zvinhu Zvinodzivirira Zvinoenderana Nekudzivirira
Kana ma resistors akabatana sezviri pamufananidzo uri padivi, ma resistors akabatana ari pamwe chete.
Chaji yemagetsi inochengetedzwa kuitira kuti magetsi emagetsi (magetsi emagetsi = chaji yemagetsi inoyerera panguva imwe chete) ichipinda panzvimbo yebazi ive yakafanana nemagetsi anobuda panzvimbo yebazi. Kune matavi akati wandei kuitira kuti magetsi ese emagetsi = huwandu hwemagetsi anoyerera mubazi rega rega. Pamasvomhu I = I 1 + I 2 + I 3 . Kunyange zvazvo musiyano wemagetsi kana voltage yemagetsi (V) mubazi rega rega uine kukosha kwakafanana.
I = V/R saka equation iri pamusoro inoshanduka kuita I = V/R 1 + V/R 2 + V/R 3 . Voltage yemagetsi yakafanana saka equation iyi inoshanduka kuita I = V (1/R 1 + 1/R 2 + 1/R 3 ). Kana resistance yekutsiva iri 1/R saka I = V (1/R). Saka 1/R = 1/R 1 + 1/R 2 + 1/R 3.
Dunhu rakafanana rine mukana wekuti kana magetsi achienda kune rimwe resistor akakanganiswa, magetsi anoramba achiyerera kuburikidza nemamwe ma resistor. Mudunhu rakatevedzana, kana magetsi achienda kune rimwe resistor akakanganiswa, ma resistor ese haafambi. Ma resistor anogona kuva mababu emwenje, zvikamu zve resistor, nezvimwe zvikamu.
Muenzaniso wezvinodzivirira zvakafanana:
1. Kana tichitarisa R 1 = 2 Ω, R 2 = 3 Ω. Ma resistors ese akabatana ari pamwe chete. Chii chinonzi resistor inotsiva? (Ω = Ohm).
Kukurukurirana
1/R = 1/R 1 + 1/R 2 = 1/2 + 1/3 = 3/6 + 2/6 = 5/6
R = 6/5 = 1,2 Ω.
Mhedzisiro iyi inoratidza kuti kukosha kwekutsiva kudiki pane kukosha kweresistor yega yega yakabatana zvakafanana.
2. Ma resistors maviri R 1 = 50 Ω uye 50 Ω akabatana mumutsara uye akafanana, akabatana nebhatiri re12 Volt. Sarudza (a) resistance yakaenzana (b) magetsi emagetsi anopfuura nemu resistor yega yega.
Kukurukurirana
(A)
Dunhu rakatevedzana:
R = R 1 + R 2 = 50 Ω + 50 Ω = 100 Ω.
Dunhu rakafanana:
1/R = 1/R 1 + 1/R 2 = 1/50 + 1/50 Ω = 2/50
R = 50/2 = 25 Ω
(B)
Dunhu rakatevedzana:
I = V / R = 12 Volts / 100 Ω = 0,12 Ampere
Dunhu rakafanana:
I = V / R = 12 Volts / 25 Ω = 0,48 Ampere
Mhedzisiro iyi inoratidza kuti magetsi ese ari kuyerera mudunhu rakafanana akakura, nepo magetsi ese ari kuyerera mudunhu rakatevedzana akadiki.
