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8-sinf Fizika 2-chorak

InfoMaster

May 5, 2021

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8-sinf Fizika 2-chorak

Testni Shirinboyev Temurbek tayyorladi.

1 / 25

Elektr doimiysining son qiymati nechaga teng?

A) 9,1*10^-31kg

B) -3*10^-19 C

C) 8,85*10^-12C^2/N*m^2

D) 3*10^-19 C

2 / 25

Elektrlanishning necha turi mavjud ?

A) 5

B) 4

C) 2

D) 3

3 / 25

bu shartli belgi qanday nomlanadi?

A) O’tkazgichlarning tutashtirmasdan kesishishi

B) Qo’ng’iroq

C) Tok manbayi

D) Kalit

4 / 25

Bitta elektron massasi nechaga teng ?

A) 3,36*10^-32kg

B) 8,81*10^-19kg

C) 1,6*10^-19kg

D) 9,1*10^-31kg

5 / 25

Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ?

A) Elektroskop

B) Barametr

C) Areometr

D) spedometr

6 / 25

O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ?

A) Nuqtaviy zaryad

B) Musbat zaryad

C) Elementar zaryad

D) Manfiy zaryad

7 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektroskop

B) Dinomometr

C) Elektrometr

D) Barometr

8 / 25

Atom tuzilishi modulini kim kashf etgan ?

A) Demokret

B) Kulon

C) Rezerfort

D) Beruniy

9 / 25

Atom so’zining ma’nosi nima ?

A) Zaryad

B) Bo’linmas

C) Elektr zaryat

D) Musbat zaryad

10 / 25

Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta?

A) 2 ta

B) 6 ta

C) 4 ta

D) 0 ta

11 / 25

Elektr zaryadining o’lchov birligi nima ?

A) kulon

B) Joul

C) volt

D) Amper

12 / 25

Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi?

A) kondensator

B) Areometr

C) Ampermetr

D) Voltmetr

13 / 25

Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi?

A) 2 marta ortadi

B) o`zgarmaydi

C) 2 marta kamayadi

D) 4 marta kamaydi

14 / 25

Tok kuchi formulasi keltirilgan javobni aniqlang?

A) Q=ItU

B) U=A/q

C) I=q/t

D) R=U/I

15 / 25

Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating?

A) 6 A

B) 0,4 A

C) 0,1 A

D) 0,5 A

16 / 25

Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ?

A) 18 Ω

B) 44 Ω

C) 20 Ω

D) 44.4 Ω

17 / 25

Temir moddasining (20⁰C da) solishtirma qashiligi nechaga teng?

$\rho =4*10^{-7}*\Omega *m$

A) 0.5

B) 0.017

C) 0,4

D) 0,098

18 / 25

Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ?

A) potensiyometr

B) rezistor

C) elektrometr

D) elektroskop

19 / 25

Tok kuchining o'lchov birligi nima?

A) Kulon

B) Volt

C) Amper

D) Joul

20 / 25

Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ?

A) 12 C

B) 24 C

C) 15 C

D) 10 C

21 / 25

Rezistor so’zining manosi nima ?

A) Qarshilik

B) Kuchlanish

C) Zaryad

D) Tok kuchi

22 / 25

Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm² bo’lgan nixrom simning qarshiligini toping ?

A) 2,2 Ω

B) 220 Ω

C) 440 Ω

D) 4,4 Ω

23 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Ampermetr

B) Voltmetr

C) Elektrometr

D) Elektroskop

24 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) I=qt

B) R=ρl/S

C) Q=I^2Rt

D) R=U/I

25 / 25

Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ?

A) 0,5 A

B) 0,1 A

C) 0.4 A

D) 0,2 A

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71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

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8-sinf Fizika 2-chorak

Baholash mezoni

86%-100% 5 baho

71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

Author: InfoMaster

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