Funda futhi izibonelo zama-resistor ahambisanayo kanye nezibonelo zama-resistor alandelanayo.
Izinto Zokumelana Nokuphikisa Uchungechunge
Uma ama-resistor exhunywe njengoba kuboniswe kumdwebo ongenhla, axhunywe ngokulandelana. Ama-resistor okukhulunywa ngawo angaba izingxenye zama-resistor, izibani, noma amanye amadivayisi kagesi okuvikela.
Ishaja kagesi (Q) ayiguquguquki ukuze ishaja kagesi ehamba ngokumelana 1 (R1 ) = ishaja kagesi ehamba ngokumelana 2 (R2 ) = ishaja kagesi ehamba ngokumelana 3 (R3 ) . Ugesi wamanje (I) yishaja kagesi egeleza phakathi nesikhathi esithile (I = Q/t), ngakho-ke ugesi odlula ngokumelana 1 (I1 ) = ugesi odlula ngokumelana 2 (I2 ) = ugesi odlula ngokumelana 3 (I3 ) . Ngokwezibalo, ugesi ophelele (I) = I 1 = I 2 = I 3.
Ngakolunye uhlangothi, i-voltage kagesi (V) iyancipha lapho ishaja kagesi ihamba ngokumelana ngakunye. I-voltage kagesi, ebizwa nangokuthi umehluko we-electric potential, ingamandla kagesi angasetshenziswa ngeyunithi ngayinye yeshaja kagesi. I-voltage kagesi iyancipha ngoba amandla kagesi asetshenziswa ekumelaneni ngakunye kukagesi. Ngakho-ke i-voltage kagesi iyonke (V) ilingana nesamba sama-voltage kagesi ekumelaneni ngakunye. Ngokwezibalo, i-voltage kagesi iyonke (V) = V 1 + V 2 + V 3 . V = IR ukuze i-voltage kagesi iyonke V = IR 1 + IR 2 + IR 3 . Ugesi ogeleza ekumelaneni ngakunye uyafana ngakho lesi sibalo siyashintsha sibe yi-V = I (R 1 + R 2 + R 3 ).
Ngokusekelwe ku-equation engenhla, kuphethwa ngokuthi ukumelana kukagesi okuphelele (R) noma ukumelana kokufaka esikhundleni kokumelana kukagesi okuxhunywe ochungechungeni kulingana nesamba sokumelana ngakunye kukagesi, ngokwezibalo R = R 1 + R 2 + R 3 . Uma kunezithiyo ezimbili kuphela ezixhunywe ochungechungeni, inani le-resistor yokufaka esikhundleni (R) = R 1 + R 2 . Uma kunezithiyo ezine ezixhunywe ochungechungeni, inani le-resistor yokufaka esikhundleni (R) = R 1 + R 2 + R 3 + R 4 . Ngokufanayo, uma kunezithiyo ezinhlanu noma ezingaphezu kwezinhlanu ezixhunywe ochungechungeni.
Isibonelo senkinga yokumelana nochungechunge:
1. Njengoba kunikezwe u-R 1 = 2 Ω, u-R 2 = 3 Ω kanye no-R 3 = 4 Ω. Ama-resistor amathathu axhunyiwe ngochungechunge. Liyini inani le-resistor yokufaka esikhundleni? (Ω = Ohm).
Ingxoxo
R = R1 + R2 + R3 = 2 + 3 + 4 = 9 Ω.
Lo mphumela ubonisa ukuthi inani lokumelana kokufaka esikhundleni likhulu kunenani lokumelana le-resistor ngayinye exhunywe ochungechungeni.
2. Ama-resistor amabili u-R 1 = 50 Ω kanye no-R 2 = 50 Ω axhunywe ngokulandelana futhi axhunywe ebhethrini le-12 Volt. Thola (a) ukumelana okulinganayo (b) ugesi odlula ku-resistor ngayinye.
Ingxoxo
(a) R = R 1 + R 2 = 50 Ω + 50 Ω = 100 Ω.
(b) I = V / R = 12 Volts / 100 Ω = 0,12 Ampere
