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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

Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan?

A) hamma javoblar to'g'ri

B) grek olimi Arximed

C) yunon olimi Fales Miletskiy

D) yunon olimi Aristotel

2 / 25

Qahrabo so’zining ma’nosi nima ?

A) Somon tortuvchi

B) Elektrlanuvchi

C) Manfiy

D) Qattiq rezina

3 / 25

Elektr zanjirida ketma-ket ulangan iste`molchilar qarshiliklari 80, 120 va 200 Om dan iborat. Umumiy kuchlanish 220 V bo`lsa, uchinchi iste`molchidagi kuchlanish tushuvini toping

A) 180 V

B) 110 V

C) 44 V

D) 220 V

4 / 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

5 / 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) 0.2 Ω

B) 0.4 Ω

C) 0.5 Ω

D) 1 Ω

6 / 25

Elektr sig’imining o’lchov birligi nima ?

A) Sekund

B) Kulon

C) Farad

D) amper

7 / 25

Bir-biridan 10sm masofada turgan sharchalardanbirining zaryadi -2*10^-8C, ikkinchisiniki esa 3*10^-8C ga teng. Ular qanday kuch bilan tortishadi?

A) 5*10‾⁸ N

B) 270 N

C) 5,4*10‾⁴ N

D) 2*10‾⁸ N

8 / 25

Elektrlanishning necha turi mavjud ?

A) 4

B) 5

C) 2

D) 3

9 / 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*10‾⁵ N/C

C) 5*10⁵ N/C

D) 5,1*10⁶ N/C

10 / 25

Akkumulator so’zining ma’nosi nima ?

A) Zaryad oqimi

B) Tok manbayi

C) To’plovchi

D) Zaryadlovchi

11 / 25

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

A) Musbat zaryad

B) Tok kuchi

C) Zaryad

D) Elektr toki

12 / 25

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

A) Musbat zaryad

B) Manfiy zaryad

C) Nuqtaviy zaryad

D) Elementar zaryad

13 / 25

Elektr zaryadining o’lchov birligi nima ?

A) Joul

B) Amper

C) kulon

D) volt

14 / 25

Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi?

A) to'g'ri javob yo'q

B) Elektrlanmaydi

C) Manfiy

D) Musbat

15 / 25

Elekt kuchlanishi formulasi berilgan javobni ko’rsating.

A) I=q/t

B) F=kq/r^2

C) U=A|q

D) E=U/d

16 / 25

Kuchlanishni o’lchaydigan asbob nima diyeladi?

A) elektrometr

B) elektroskop

C) voltmeter

D) ampermetr

17 / 25

Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng?

A) 500 kV

B) 1,5 V

C) 5V

D) 220 V

18 / 25

Uzunligi 1 m, ko’ndalang kesimining yuzi 0,4 mm² bo’lgan nikelin simning uchlaridagi kuchlanish 2 V gat eng. Shu elektr zanjir orqali o’tayotgan tok kuchini aniqlang?

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

A) 0,8 A

B) 2 A

C) 4 A

D) 9 A

19 / 25

Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ?

A) 0,1 A

B) 0,2 A

C) 0.4 A

D) 0,5 A

20 / 25

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

A) 24 C

B) 10 C

C) 15 C

D) 12 C

21 / 25

Rezistor so’zining manosi nima ?

A) Kuchlanish

B) Zaryad

C) Tok kuchi

D) Qarshilik

22 / 25

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

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

A) 0,4

B) 0,098

C) 0.017

D) 0.5

23 / 25

Tok kuchining o'lchov birligi nima?

A) Kulon

B) Amper

C) Joul

D) Volt

24 / 25

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

A) 15 V

B) 12 V

C) 3 v

D) 25 V

25 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) I=qt

B) R=U/I

C) Q=I^2Rt

D) R=ρl/S

Baholash mezoni

86%-100% 5 baho

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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