Piv txwv ntawm lub voj voog resistor

3 Piv txwv ntawm cov lus nug txog lub voj voog resistor

1. Cov koob ntawm cov resistors hauv qab no uas muaj qhov sib npaug zoo tshaj plaws yog ...

Kev Sib Tham

Teb A

R₁ = 2 Ω, R₂ = 2 Ω, R₃ = 6 Ω, R₄ = 6 Ω

R₃ thiab R₄ txuas ua ke. Lub resistor hloov yog:

1 / R₃₄ = 1/R₃ + 1/R₄ = 1/6 + 1/6 = 2/6

R₃₄ = 6/2 = 3 Ω

R_1, R₂ thiab R₃₄ txuas ua ke. Lub resistor hloov pauv yog:

R = R₁ + R₂ + R₃₄ = 2 Ω + 2 Ω + 3 Ω

R = 7 Ω

Teb B

R₁ = 2 Ω, R₂ = 4 Ω, R₃ = 4 Ω, R₄ = 8 Ω

R₂ thiab R₃ txuas ua ke. Lub resistor hloov pauv yog:

R₂₃ = R₂ + R₃ = 4 Ω + 4 Ω = 8 Ω

R₂₃ thiab R₄ txuas ua ke. Lub resistor hloov yog:

1 / R₂₃₄ = 1/R₂₃ + 1/R₄ = 1/8 + 1/8 = 2/8

R₂₃₄ = 8/2 = 4 Ω

R₁ thiab R₂₃₄ txuas ua ke. Lub resistor hloov pauv yog:

R = R₁ + R₂₃₄ = 2 Ω + 4 Ω

R = 6 hli Ω

Teb C

R₁ = 9 Ω, R₂ = 9 Ω, R₃ = 9 Ω, R₄ = 2 Ω

R_1, R₂ thiab R₃ txuas ua ke. Lub resistor hloov yog:

1 / R₁₂₃ = 1 /R₁ + 1/R₂ + 1/R₃ = 1/9 + 1/9 + 1/9 = 3/9

R₁₂₃ = 9/3 = 3 Ω

R₁₂₃ thiab R₄ txuas ua ke. Lub resistor hloov pauv yog:

R = R₁₂₃ + R₄ = 3 Ω + 2 Ω

R = 5 hli Ω

Teb D

R₁ = 5 Ω, R₂ = 10 Ω, R₃ = 2 Ω, R₄ = 2 Ω

R₁ thiab R₂ txuas ua ke. Lub resistor hloov yog:

1 / R₁₂ = 1/R₁ + 1/R₂ = 1/5 + 1/10 = 2/10 + 1/10

1 / R₁₂ = 3 / 10

R₁₂ = 10 / 3 Ω

R₃ thiab R₄ txuas ua ke. Lub resistor hloov yog:

1 / R₃₄ = 1/R₃ + 1/R₄ = 1/2 + 1/2 = 2/2

R₃₄ = 1 Ω

R₁₂ thiab R₃₄ txuas ua ke. Lub resistor hloov pauv yog:

R = R₁₂ + R₃₄ = 10/3 + 3/3 = 13/3

R = 4,3 hli Ω

Cov lus teb yog lawm yog A.

2. Qhov kev tiv thaiv sib npaug hauv daim duab hauv qab no yog…

A. 26 Ohm

B. 16 Ohms

C. 15 Ohms

D. 11 Ohm

Kev Sib Tham

Cov resistors 6 Ω, 3 Ω thiab 2 Ω txuas ua ke. Cov resistors hloov yog:

1 / R_P = 1/6 + 1/3 + 1/2 = 1/6 + 2/6 + 3/6 = 6/6

R_P = 6/6 = 1 Ω

Cov resistors 7 Ω, 8 Ω, thiab 1 Ω txuas ua ke. Cov resistors hloov pauv yog:

R = 7 + 8 + 1 = 16 Ω

Cov lus teb yog B.

3. Rp nyob rau hauv lub voj voog sib xyaw hauv qab no yog pes tsawg?

A. 8 ohms

B. 1/8 ohm

C. 1 ohm

D. 7 ohms

Kev Sib Tham

Nws paub tias:

Tus Resistor 1 (R)₁) = 2 Ohms

Tus Resistor 2 (R)₂) = 2 Ohms

Tus Resistor 3 (R)₃) = 2 Ohms

Tus Resistor 4 (R)₄) = 2 Ohms

Nug: Hloov resistor

Lus teb:

Tus R Resistor₂ thiab resistor R₃ txuas ua ke. Hloov resistor:

1 / R₂₃ = 1/R₂ + 1/R₃

1 / R₂₃ = 1/2 + 1/2 = 2/2

R₂₃ = 1 Ohms

Tus R Resistor₁, tus tiv taus R₂₃ thiab resistor R₃ txuas ua ke. Hloov resistor:

R = R₁ + R₂ + R₃ = 2 + 1 + 2

R = 5 Ohm

Cov lus teb yog yog 5 Ohms.

Qhov chaw nug lus:

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