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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

Elekt kuchlanishining ulchov birligi nima?

A) Sekund

B) Volt

C) Kulon

D) Amper

2 / 25

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

A) 0,1 A

B) 6 A

C) 0,4 A

D) 0,5 A

3 / 25

Elekt kuchlanishi formulasi berilgan javobni ko’rsating.

A) I=q/t

B) E=U/d

C) F=kq/r^2

D) U=A|q

4 / 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) 3 v

D) 12 V

5 / 25

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

A) 20 J

B) 155 J

C) 15 J

D) 220 J

6 / 25

Tok kuchining o'lchov birligi nima?

A) Amper

B) Kulon

C) Joul

D) Volt

7 / 25

Kuchlanishni o’lchaydigan asbob nima diyeladi?

A) ampermetr

B) elektrometr

C) elektroskop

D) voltmeter

8 / 25

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

A) rezistor

B) elektrometr

C) potensiyometr

D) elektroskop

9 / 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

10 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Voltmetr

B) Ampermetr

C) Elektrometr

D) Elektroskop

11 / 25

Akkumulator so’zining ma’nosi nima ?

A) Tok manbayi

B) To’plovchi

C) Zaryadlovchi

D) Zaryad oqimi

12 / 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) 0.4 Ω

B) 1 Ω

C) 0.5 Ω

D) 0.2 Ω

13 / 25

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

A) o`zgarmaydi

B) 2 marta ortadi

C) 4 marta kamaydi

D) 2 marta kamayadi

14 / 25

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

A) 5*10⁵ N/C

B) 5*10‾⁵ N/C

C) 5,1*10⁶ N/C

D) 6*10⁴ N/C

15 / 25

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

A) Barametr

B) Elektroskop

C) Areometr

D) spedometr

16 / 25

Elektr sig’imining o’lchov birligi nima ?

A) Sekund

B) amper

C) Kulon

D) Farad

17 / 25

Atom so’zining ma’nosi nima ?

A) Bo’linmas

B) Musbat zaryad

C) Elektr zaryat

D) Zaryad

18 / 25

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

A) 4 ta

B) 6 ta

C) 2 ta

D) 0 ta

19 / 25

Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan?

A) yunon olimi Aristotel

B) yunon olimi Fales Miletskiy

C) grek olimi Arximed

D) hamma javoblar to'g'ri

20 / 25

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

A) Nuqtaviy zaryad

B) Musbat zaryad

C) Elementar zaryad

D) Manfiy zaryad

21 / 25

Bitta elektron massasi nechaga teng ?

A) 1,6*10^-19kg

B) 9,1*10^-31kg

C) 3,36*10^-32kg

D) 8,81*10^-19kg

22 / 25

Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi?

A) Manfiy

B) Elektrlanmaydi

C) Musbat

D) to'g'ri javob yo'q

23 / 25

Bitta elektron zaryadi nechaga teng ?

A) 8,81*10^-19

B) 9,1*10^-31C

C) 2,01*10^-19C

D) 1,6*10^-19C

24 / 25

Elektr doimiysining son qiymati nechaga teng?

A) 9,1*10^-31kg

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

C) 3*10^-19 C

D) -3*10^-19 C

25 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektrometr

B) Dinomometr

C) Barometr

D) Elektroskop

Baholash mezoni

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71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

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May 2021
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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

9-sinf Fizika 1-chorak

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