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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

Rezistor so’zining manosi nima ?

A) Zaryad

B) Tok kuchi

C) Kuchlanish

D) Qarshilik

2 / 25

Elekt kuchlanishining ulchov birligi nima?

A) Kulon

B) Amper

C) Volt

D) Sekund

3 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Voltmetr

B) Ampermetr

C) Elektroskop

D) Elektrometr

4 / 25

Elektr qarshiligi qaysi harf bilan belgilanadi?

A) U

B) J

C) R

D) L

5 / 25

Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi

A) 220 J

B) 155 J

C) 20 J

D) 15 J

6 / 25

Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan?

A) 25 V

B) 15 V

C) 12 V

D) 3 v

7 / 25

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

A) 220 Ω

B) 4,4 Ω

C) 2,2 Ω

D) 440 Ω

8 / 25

Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ?

A) 0.4 A

B) 0,2 A

C) 0,5 A

D) 0,1 A

9 / 25

Tok kuchining o'lchov birligi nima?

A) Amper

B) Volt

C) Joul

D) Kulon

10 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) I=qt

B) R=U/I

C) R=ρl/S

D) Q=I^2Rt

11 / 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) 0,5 A

D) 0,1 A

12 / 25

Atom so’zining ma’nosi nima ?

A) Bo’linmas

B) Zaryad

C) Elektr zaryat

D) Musbat zaryad

13 / 25

Zaryadi -5*10^-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping?

A) 6*10⁴ N/C

B) 5*10⁵ N/C

C) 5,1*10⁶ N/C

D) 5*10‾⁵ N/C

14 / 25

Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi?

A) Zaryad

B) Elektr toki

C) Tok kuchi

D) Musbat zaryad

15 / 25

Qarshiligi 10 Ω bo`lgan mis o`tkazgichni 5 ta teng bo`lakka bo`lib, bo`laklar o`zaro parallel ulandi. Umumiy qarshilikni toping.

A) 1 Ω

B) 0.5 Ω

C) 0.4 Ω

D) 0.2 Ω

16 / 25

Atom tuzilishi modulini kim kashf etgan ?

A) Beruniy

B) Demokret

C) Rezerfort

D) Kulon

17 / 25

Elektr doimiysining son qiymati nechaga teng?

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

B) 9,1*10^-31kg

C) 3*10^-19 C

D) -3*10^-19 C

18 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Barometr

B) Dinomometr

C) Elektrometr

D) Elektroskop

19 / 25

Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan?

A) grek olimi Arximed

B) hamma javoblar to'g'ri

C) yunon olimi Fales Miletskiy

D) yunon olimi Aristotel

20 / 25

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

A) 2 ta

B) 4 ta

C) 0 ta

D) 6 ta

21 / 25

Bitta elektron zaryadi nechaga teng ?

A) 1,6*10^-19C

B) 2,01*10^-19C

C) 9,1*10^-31C

D) 8,81*10^-19

22 / 25

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

A) Elementar zaryad

B) Musbat zaryad

C) Manfiy zaryad

D) Nuqtaviy zaryad

23 / 25

Bitta elektron massasi nechaga teng ?

A) 3,36*10^-32kg

B) 1,6*10^-19kg

C) 8,81*10^-19kg

D) 9,1*10^-31kg

24 / 25

Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping.

A) 4 A

B) 5 A

C) 1.8 A

D) 2 A

25 / 25

Elektr zaryadining o’lchov birligi nima ?

A) volt

B) Joul

C) kulon

D) Amper

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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

8-sinf Fizika 1-chorak

8-sinf Fizika 3-chorak

9-sinf Fizika 4-chorak

9-sinf Fizika 3-chorak

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