Amasekethe kagesi anama-resistor ahambisanayo nangaphakathi - izinkinga nezixazululo

Amasekethe kagesi anama-resistor ahambisanayo nangaphakathi - izinkinga nezixazululo

1. Ngokusekelwe esithombeni esingezansi, uma umthombo wamandla kagesi (emf) ungama-volt angu-24, nquma okwamanje kagesi I.

Kwaziwa:

Umthombo we-emf = 24 Volt

Ukumelana kwangaphakathi (r) = 2 Ohm

Ukumelana Ama-ohm angu-40, ama-ohm angu-20, kanye nama-ohm angu-20.

Wanted : 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, R₂ = 4 Ω, R₃ = 4 Ω kanti ugesi wamanje ungu-0.5 A. Thola i-voltage kagesi.

Kwaziwa:

Amandla kagesi (I) = 0.5 Ampere

Umphikisi R₁ = 3 Ohm

Umphikisi R₂ = 4 Ohm

Umphikisi R₃ = 4 Ohm

Kufunwa: I-voltage kagesi (V)

Isixazululo:

Bala ukumelana okulinganayo:

R₂ no-R₃ zixhunywe ngokulingana. I-resistor efanayo:

1/R₂₃ = 1/R₂ +1/R₃ = 1/4 + 1/4 = 2/4

R₂₃ = 4/2 = 2 Ohms

R₁ no-R₂₃ zixhunywe ngochungechunge. I-resistor efanayo:

R = R₁ + R₂₃ = 3 + 2 = 5 Ohms

I-voltage kagesi:

V = IR = (0.5)(5) = 2.5 Volts