Amasekethe kagesi anama-resistor ahambisanayo nangaphakathi - izinkinga nezixazululo
1. Ngokusekelwe esithombeni esingezansi, uma umthombo wamandla kagesi (emf) ungama-volt angu-24, nquma ugesi I.
Kwaziwa:
Umthombo we-emf = 24 Volt
Ukumelana kwangaphakathi (r) = 2 Ohm
Ama-Resistors angu-40 Ohm, 20 Ohm, kanye no-20 Ohm.
Wante d: Ugesi wamanje I
Isixazululo:
Ama-resistors axhunywe ngokulingana, i-resistor efanayo:
1/R = 1/40 + 1/20 + 1/20
1/R = 1/40 + 2/40 + 2/40
1/R = 5/40
R = 40/5
R = 8 Ohm
I-voltage ye-terminal:
V = emf – I r
V = 24 – I 2
Ugesi wamanje I:
V = IR
24 – I 2 = I 8
24 = I 8 + I 2
24 = I (10)
I = 24/10
I = 2.4 Ampere
2. Ngokusekelwe esithombeni esingezansi, uma u-R1 = 3 Ω, u-R2 = 4 Ω, u-R3 = 4 Ω kanye nogesi ongu-0.5 A. Thola i-voltage kagesi.
Kwaziwa:
Amandla kagesi (I) = 0.5 Ampere
Isithambisi R 1 = 3 Ohm
Umphikisi R 2 = 4 Ohm
Isithambisi R 3 = 4 Ohm
Okufunwayo: I-voltage kagesi (V)
Isixazululo:
Bala ukumelana okulinganayo:
I-R2 ne -R3 zixhunywe ngokulingana. I-resistor efanayo:
1 /R 23 = 1/R 2 + 1/R 3 = 1/4 + 1/4 = 2/4
R 23 = 4/2 = 2 Ohm
I-R1 kanye ne- R23 zixhunywe ngochungechunge. I-resistor efanayo:
R = R1 + R23 = 3 + 2 = 5 Ohms
I-voltage kagesi:
V = IR = (0.5)(5) = 2.5 Volts
