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8-sinf Fizika 2-chorak

InfoMaster

May 5, 2021

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8-sinf Fizika 2-chorak

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1 / 25

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

A) 155 J

B) 20 J

C) 15 J

D) 220 J

2 / 25

Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng?

A) 5V

B) 500 kV

C) 1,5 V

D) 220 V

3 / 25

Tok kuchi formulasi keltirilgan javobni aniqlang?

A) R=U/I

B) I=q/t

C) Q=ItU

D) U=A/q

4 / 25

Elekt kuchlanishining ulchov birligi nima?

A) Sekund

B) Volt

C) Kulon

D) Amper

5 / 25

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

A) elektrometr

B) potensiyometr

C) rezistor

D) elektroskop

6 / 25

Elektr qarshiligi qaysi harf bilan belgilanadi?

A) L

B) J

C) R

D) U

7 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Elektrometr

B) Voltmetr

C) Elektroskop

D) Ampermetr

8 / 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) 25 V

C) 3 v

D) 12 V

9 / 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) 0.4 Ω

C) 1 Ω

D) 0.2 Ω

10 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Barometr

B) Dinomometr

C) Elektrometr

D) Elektroskop

11 / 25

Elektr zaryadining o’lchov birligi nima ?

A) kulon

B) Joul

C) Amper

D) volt

12 / 25

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

A) kondensator

B) Voltmetr

C) Ampermetr

D) Areometr

13 / 25

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

A) 5,4*10‾⁴ N

B) 5*10‾⁸ N

C) 270 N

D) 2*10‾⁸ N

14 / 25

Bitta elektron massasi nechaga teng ?

A) 1,6*10^-19kg

B) 8,81*10^-19kg

C) 3,36*10^-32kg

D) 9,1*10^-31kg

15 / 25

Elektr doimiysining son qiymati nechaga teng?

A) 9,1*10^-31kg

B) 3*10^-19 C

C) -3*10^-19 C

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

16 / 25

Qahrabo so’zining ma’nosi nima ?

A) Elektrlanuvchi

B) Manfiy

C) Somon tortuvchi

D) Qattiq rezina

17 / 25

bu shartli belgi qanday nomlanadi?

A) Kalit

B) Tok manbayi

C) Qo’ng’iroq

D) O’tkazgichlarning tutashtirmasdan kesishishi

18 / 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) 110 V

B) 220 V

C) 44 V

D) 180 V

19 / 25

Atom tuzilishi modulini kim kashf etgan ?

A) Beruniy

B) Rezerfort

C) Kulon

D) Demokret

20 / 25

Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi?

A) Elektrlanmaydi

B) Manfiy

C) to'g'ri javob yo'q

D) Musbat

21 / 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) 1.8 A

C) 2 A

D) 5 A

22 / 25

Akkumulator so’zining ma’nosi nima ?

A) Zaryad oqimi

B) Zaryadlovchi

C) To’plovchi

D) Tok manbayi

23 / 25

Elektrlanishning necha turi mavjud ?

A) 3

B) 5

C) 2

D) 4

24 / 25

Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan?

A) grek olimi Arximed

B) yunon olimi Fales Miletskiy

C) hamma javoblar to'g'ri

D) yunon olimi Aristotel

25 / 25

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

A) Manfiy zaryad

B) Musbat zaryad

C) Elementar zaryad

D) Nuqtaviy zaryad

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

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