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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

Qahrabo so’zining ma’nosi nima ?

A) Somon tortuvchi

B) Qattiq rezina

C) Manfiy

D) Elektrlanuvchi

2 / 25

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

A) Areometr

B) Voltmetr

C) kondensator

D) Ampermetr

3 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektroskop

B) Elektrometr

C) Barometr

D) Dinomometr

4 / 25

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

A) Areometr

B) Elektroskop

C) spedometr

D) Barametr

5 / 25

Atom tuzilishi modulini kim kashf etgan ?

A) Kulon

B) Rezerfort

C) Demokret

D) Beruniy

6 / 25

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

A) o`zgarmaydi

B) 4 marta kamaydi

C) 2 marta kamayadi

D) 2 marta ortadi

7 / 25

bu shartli belgi qanday nomlanadi?

A) Kalit

B) Qo’ng’iroq

C) O’tkazgichlarning tutashtirmasdan kesishishi

D) Tok manbayi

8 / 25

Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan?

A) yunon olimi Aristotel

B) hamma javoblar to'g'ri

C) grek olimi Arximed

D) yunon olimi Fales Miletskiy

9 / 25

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

A) Zaryad

B) Tok kuchi

C) Elektr toki

D) Musbat zaryad

10 / 25

Akkumulator so’zining ma’nosi nima ?

A) Zaryadlovchi

B) Zaryad oqimi

C) Tok manbayi

D) To’plovchi

11 / 25

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

A) 270 N

B) 2*10‾⁸ N

C) 5*10‾⁸ N

D) 5,4*10‾⁴ N

12 / 25

Bitta elektron massasi nechaga teng ?

A) 8,81*10^-19kg

B) 9,1*10^-31kg

C) 1,6*10^-19kg

D) 3,36*10^-32kg

13 / 25

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

A) Elementar zaryad

B) Musbat zaryad

C) Manfiy zaryad

D) Nuqtaviy zaryad

14 / 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) 0.5 Ω

B) 0.2 Ω

C) 1 Ω

D) 0.4 Ω

15 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Elektroskop

B) Voltmetr

C) Elektrometr

D) Ampermetr

16 / 25

Elektr qarshiligi qaysi harf bilan belgilanadi?

A) U

B) J

C) R

D) L

17 / 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) 0,5 A

C) 0,1 A

D) 0,4 A

18 / 25

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

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

A) 0.017

B) 0.5

C) 0,098

D) 0,4

19 / 25

Elekt kuchlanishi formulasi berilgan javobni ko’rsating.

A) E=U/d

B) F=kq/r^2

C) U=A|q

D) I=q/t

20 / 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) 20 J

C) 155 J

D) 15 J

21 / 25

Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng?

A) 1,5 V

B) 220 V

C) 500 kV

D) 5V

22 / 25

Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ?

A) 0,5 A

B) 0,2 A

C) 0,1 A

D) 0.4 A

23 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) R=ρl/S

B) R=U/I

C) Q=I^2Rt

D) I=qt

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) 12 V

B) 3 v

C) 15 V

D) 25 V

25 / 25

Tok kuchining o'lchov birligi nima?

A) Joul

B) Amper

C) Volt

D) Kulon

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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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

9-sinf Fizika 2-chorak

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