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5 Piv txwv ntawm Kirchhoff Txoj Cai Thib Ob

Tsis tas li ntawd kawm cov ntaub ntawv ntawm Kirchhoff's Law thiab kev sib tham txog Kirchhoff's Law cov lus nug.

1. Ib lub voj voog hluav taws xob muaj plaub lub resistors, txhua lub R ₁ = 6 Ohm, R ₂ = 6 Ohm, R ₃ = 9 Ohm thiab R ₄ = 3 Ohm txuas nrog E ₁ = 6 Volt, E ₂ = 12 Volt raws li qhia hauv daim duab hauv qab no. Cov hluav taws xob ntws yog….

A. 1/5 A
B. 2/5 A
C. 3/5 A
D. 4/5 A
E. 1 A

Kev Sib Tham

Nws paub tias:
Tus Resistor 1 (R)₁) = 6 Ω
Tus Resistor 2 (R)₂) = 6 Ω
Tus Resistor 3 (R)₃) = 9 Ω
Tus Resistor 4 (R)₄) = 3 Ω
Qhov chaw ntawm emf 1 (E₁) = 6 Volt
Qhov chaw ntawm emf 2 (E₂) = 12 Volt
Nug: Qhov tam sim no ntws hauv lub voj voog (I)
Lus teb:

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4 Piv txwv ntawm Cov Teeb Meem Resistor Parallel

Tsis tas li ntawd kawm cov ntaub ntawv ntawm cov resistors parallel thiab piv txwv ntawm cov teeb meem resistor series , piv txwv ntawm cov teeb meem hluav taws xob tsis kam.

1. Muab hais tias R ₁ = 2 Ω thiab R ₂ = 4 Ω txuas ua ke. Tus nqi ntawm lub resistor hloov pauv yog dab tsi? (Ω = Ohm).

Kev Sib Tham

1/R = 1/R ₁ + 1/R ₂ = 1/2 + 1/4 = 2/4 + 1/4 = 3/4

R = 4/3 Ω

Tus nqi ntawm qhov tsis kam hloov pauv yog ntau dua li tus nqi ntawm txhua lub resistor txuas nrog hauv series.

2. R.R₁ = 1 Ω, R₂ = 2 Ω, R₃ = 3 Ω. Tus nqi hloov resistor yog…..

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4 Piv txwv ntawm Cov Teeb Meem Resistor Series

Tsis tas li ntawd, kawm txog cov khoom siv resistor series thiab cov piv txwv ntawm cov teeb meem parallel resistor.

1. Muab hais tias R ₁ = 2 Ω thiab R ₂ = 4 Ω txuas ua ke. Tus nqi ntawm lub resistor hloov pauv yog dab tsi? (Ω = Ohm).

Kev Sib Tham

R = R ₁ + R ₂ = 2 + 4 = 6 Ω.

Tus nqi ntawm qhov tsis kam hloov pauv yog ntau dua li tus nqi ntawm txhua lub resistor txuas nrog hauv series.

2. R ₁ = 1 Ω, R ₂ = 2 Ω, R ₃ = 3 Ω. Tus nqi hloov resistor yog…..

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3 Piv txwv ntawm Ohm's Law Cov Lus Nug

1. Raws li cov ntaub ntawv hauv lub rooj, tus nqi ntawm kev tiv thaiv hluav taws xob yog….. Cov ntaub ntawv hauv lub rooj puas piav qhia txog Ohm txoj cai?

Kev Sib Tham

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Tsis tas li ntawd kawm cov ntaub ntawv ntawm kev tiv thaiv hluav taws xob , piv txwv ntawm cov teeb meem resistor series , piv txwv ntawm cov teeb meem resistor parallel.

2 Piv txwv ntawm Cov Lus Nug Txog Kev Tiv Thaiv Hluav Taws Xob

1. Ib lub cuab yeej hluav taws xob txuas nrog lub zog fais fab 30 Volt thiab nqa hluav taws xob ntawm 2 Amperes. Txheeb xyuas qhov tsis kam hluav taws xob ntawm lub cuab yeej!

Kev Sib Tham

Nws paub tias:

Lub zog hluav taws xob (V) = 30 Volts

Tam sim no hluav taws xob (I) = 2 Ampere

Lus Nug: Hluav taws xob tsis kam (R)

Lus teb:

Cov qauv hluav taws xob tsis kam:

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8 Piv Txwv Txog Cov Teeb Meem Hluav Taws Xob

1. Ib qho hluav taws xob ntawm 1 Coulomb hla dhau ib txoj hlua hluav taws xob rau 1 vib nas this. Qhov loj ntawm cov hluav taws xob tam sim no yog…..

Kev Sib Tham

Nws paub tias:

Them (Q) = 1 Coulomb

Lub sijhawm luv (t) = 1 vib nas this

Xav tau rau: lub zog hluav taws xob

Lus teb:

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10 Cov lus nug piv txwv ntawm torque

1. Qhov hnyav ntawm tus pas nrig AB yuav tsis quav ntsej. Yog tias FR _yog qhov tshwm sim ntawm peb lub zog F1 _, F2 _, thiab F3 _, ces qhov loj ntawm lub zog F2 _thiab qhov deb x yog...

A. 50 N nqes thiab 0,5 m rau sab laug ntawm A

B. 50 N mus rau saum thiab 0,5 m rau sab xis ntawm A

C. 50 N mus rau saum thiab 0,75 m rau sab laug ntawm A

D. 50 N nqes thiab 0,75 m rau sab xis ntawm A

E. 50 N mus rau saum thiab 0,2 m rau sab xis ntawm A

Kev Sib Tham

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11 Piv txwv ntawm Cov Lus Nug Txog Kev Hloov Pauv

Lub Sijhawm ntawm Style

1. Ib tug pas nrig uas sib zog heev, ntev 140 cm. Muaj peb lub zog ua rau ntawm tus pas nrig, F1 ₌ 20 Newton, _F2 = 10 N, thiab F3 ₌ 40 N, txhua lub muaj qhov kev taw qhia thiab qhov chaw raws li pom hauv daim duab. Qhov loj ntawm lub zog uas ua rau tus pas nrig tig ib ncig ntawm nws qhov chaw nruab nrab yog...

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20 Piv txwv ntawm cov lus nug txog hluav taws xob zoo li qub

Lub zog hluav taws xob

1. Qhov chaw A nyob hauv ib lub teb hluav taws xob . Lub zog hluav taws xob ntawm qhov chaw A yog 0,5 NC ^-1 . Yog tias ib yam khoom uas muaj lub zog ntawm 0,25 C raug muab tso rau ntawm qhov chaw A, ces lub zog Coulomb ntawm...

A. 0,125 N

B. 0,25 N

C. 0,35 N

D. 0,40 N

Sab Hnub Tuaj 0,70 N

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9 Piv txwv ntawm Coulomb Force Cov Lus Nug

1. Peb lub thauj khoom tau teeb tsa raws li hauv daim duab hauv qab no. Lub zog Coulomb uas raug los ntawm lub zog B yog .... (k = 9 x 10⁹ Nm²C^-2, 1 μC = 10^-6 C)

A. 09 x 10 ¹ N kom them C

B. 09 x 10 ¹ N kom them A

C. 18 x 10 ¹ N kom them C

D. 18 x 10 ¹ N kom them A

E. 36 x 10 ¹ N kom them C

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