Lipotoloho tse bonolo tsa DC - mathata le litharollo

1. Ho latela setšoantšo se ka tlase, fumana motlakase ka R ₁.

Tse tsejoang:

Mohanyetsi 1 (R ₁ ) = 4 Ω

Mohanyetsi 2 (R ₂ ) = 4 Ω

Mohanyetsi 3 (R ₃ ) = 8 Ω

Motlakase oa motlakase (V) = 40 Volts

_Ho batloa: Motlakase o fetang R1

Tharollo:

Motlakase o phalla ho tloha ho bokgoni bo phahameng ho ya ho bokgoni bo tlase. Tsela eo motlakase o tsamayang ka yona potolohong e ka hodimo e tshwana le tsela e tsamayang ka watjhe.

Motlakase o phallang o tsoa betring

Taba ea pele, bala khanyetso e lekanang ( R). Kamora moo, bala motlakase o sebelisang equation ea molao oa Ohm :

V = IR kapa I = V / R

V = motlakase , I = motlakase oa motlakase , R = khanyetso e lekanang

Khanyetso e lekanang:

Resistor R ₁ le resistor R ₂ li hokahane ka ho lekana . Khanyetso e lekanang:

1/R ₁₂ = 1/R ₁ + 1/R ₂ = 1/4 + 1/4 = 2/4

R ₁₂ = 4/2 = 2 Ω

Resistor R ₁₂ le resistor R ₃ li hokahane ka letoto . Khanyetso e lekanang:

R = R ₁₂ + R ₃ = 2 + 8 = 10 Ω

Motlakase o phallang ka ntle ho betri:

Ke = V / R = 40 / 10 = 4 A

Motlakase o phallang ka ntle ho betri ke 4 Ampere.

Motlakase oa motlakase V _ab le V _bc

Kirchhoffmolao oa pele oa e bolela hore ho ntlha efe kapa efe ea khokahano, kakaretso ea maqhubu 'ohle a kenang kopanong e tlameha ho lekana le kakaretso ea maqhubu 'ohle a tsoang kopanong.

Ho latela molao oa pele oa Kirchhoff , ho fihletsoe qeto ea hore haeba motlakase o phallang ka har'a betri ke 4 A joale motlakase o fetang ka har'a ab o lekana le 4 Ampere, kahoo motlakase o fetang ka har'a bc ke 4 Ampere.

Motlakase oa motlakase V _ab :

V _ab = I _ab R _ab = (4)(2) = 8 Volts

Motlakase oa motlakase V _bc :

V _bc = I _bc R _bc = (4)(8) = 32 Volts

Potoloho e ka hodimo e hokahantswe ka tatellano e le hore motlakase o felletseng wa motlakase e be V = V _ab + V _bc = 8 Volts + 32 Volts = 40 Volts.

Motlakase o phalla ka R ₁ = 4 Ω

I ₁ = V _ab / R ₁ = 8 Volts / 4 Ohms = 2 A

I ₂ = V _ab / R ₂ = 8 Volts / 4 Ohms = 2 A

Motlakase o phallang ka ntle ho betri ke 4 A. Ha o fihla ntlheng ya a, motlakase o arolwa ka bobedi, motlakase wa 2 Ampere o phalla ka hara resistor R ₁ mme

motlakase oa 2 A o phalla ka har'a resistor R ₂ . 2 A + 2 A = 4 A.

2. Ho latela setšoantšo se ka tlase, fumana motlakase o phallang ka har'a resistor ea 4-Ω.

Tse tsejoang:

Mohanyetsi 1 (R ₁ ) = 6 Ω

Mohanyetsi 2 (R ₂ ) = 4 Ω

Mohanyetsi 3 (R ₃ ) = 1.6 Ω

Motlakase oa motlakase (V) = 16 Volts

Ho batloa: Motlakase o phalla ka 4 Ω

Tharollo:

Motlakase o phalla ho tloha ho bokgoni bo phahameng ho ya ho bokgoni bo tlase. Tsela eo motlakase o tsamayang ka yona potolohong e ka hodimo e tshwana le tsela e tsamayang ka watjhe.

Motlakase o phallang o tsoa betring

Khanyetso e lekanang:

Resistor R ₁ le resistor R ₂ li hokahane ka ho lekana. Resistor e lekanang:

1/R ₁₂ = 1/R ₁ + 1/R ₂ = 1/6 + 1/4 = 2/12 + 3/12 = 5/12

R ₁₂ = 12/5 = 2.4 Ω

Resistor R ₁₂ le resistor R ₃ li hokahane ka tatellano. Resistor e lekanang:

R = R ₁₂ + R ₃ = 2.4 + 1.6 = 4 Ω

Motlakase o phallang ka ntle ho betri:

Ke = V / R = 16 / 4 = 4 A

Motlakase oa motlakase V _ab le V _bc

Ho latela molao oa pele oa Kirchhoff, ba fihletse qeto ea hore haeba motlakase o phallang ka har'a betri ke 4 A joale motlakase o fetang ka har'a ab o lekana le 4 Ampere, kahoo motlakase o fetang ka har'a bc ke 4 Ampere.

Motlakase oa motlakase V _ab :

V _ab = I _ab R _ab = (4)(2.4) = 9.6 Volts

Motlakase oa motlakase V _bc :

V _bc = I _bc R _bc = (4)(1.6) = 6.4 Volts

Potoloho e ka hodimo e hokahantswe ka tatellano e le hore motlakase o felletseng wa motlakase e be V = V _ab + V _bc = 9.6 Volts + 6.4 Volts = 16 Volts.

Motlakase o phallang ka R2 = ₄ Ω

I ₁ = V _ab / R ₁ = 9.6 Volts / 6 Ohms = 1.6 A

I ₂ = V _ab / R ₂ = 9.6 Volts / 4 Ohms = 2.4 A

Motlakase o phallang ka ntle ho betri ke 4 A. Ha o fihla ntlheng ya a motlakase o arolwa ka bobedi,

motlakase oa 1.6 A o phalla ka har'a resistor R ₁ mme motlakase oa 2.4 A o phalla ka har'a resistor R _2. 1.6 A + 2.4 A = 4 A.