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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) Qattiq rezina

B) Elektrlanuvchi

C) Manfiy

D) Somon tortuvchi

2 / 25

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

A) 2 A

B) 5 A

C) 1.8 A

D) 4 A

3 / 25

Akkumulator so’zining ma’nosi nima ?

A) To’plovchi

B) Tok manbayi

C) Zaryadlovchi

D) Zaryad oqimi

4 / 25

bu shartli belgi qanday nomlanadi?

A) O’tkazgichlarning tutashtirmasdan kesishishi

B) Qo’ng’iroq

C) Kalit

D) Tok manbayi

5 / 25

Elektr doimiysining son qiymati nechaga teng?

A) -3*10^-19 C

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

C) 3*10^-19 C

D) 9,1*10^-31kg

6 / 25

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

A) kondensator

B) Areometr

C) Voltmetr

D) Ampermetr

7 / 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) 0.2 Ω

D) 0.5 Ω

8 / 25

Elektr zaryadining o’lchov birligi nima ?

A) Joul

B) Amper

C) volt

D) kulon

9 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektrometr

B) Barometr

C) Dinomometr

D) Elektroskop

10 / 25

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

A) 5,1*10⁶ N/C

B) 5*10⁵ N/C

C) 6*10⁴ N/C

D) 5*10‾⁵ N/C

11 / 25

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

A) Musbat zaryad

B) Elektr toki

C) Zaryad

D) Tok kuchi

12 / 25

Atom tuzilishi modulini kim kashf etgan ?

A) Rezerfort

B) Kulon

C) Beruniy

D) Demokret

13 / 25

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

A) Manfiy zaryad

B) Musbat zaryad

C) Nuqtaviy zaryad

D) Elementar zaryad

14 / 25

Tok kuchining o'lchov birligi nima?

A) Volt

B) Kulon

C) Amper

D) Joul

15 / 25

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

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

A) 0,098

B) 0.5

C) 0,4

D) 0.017

16 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Voltmetr

B) Ampermetr

C) Elektroskop

D) Elektrometr

17 / 25

Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ?

A) 20 Ω

B) 18 Ω

C) 44 Ω

D) 44.4 Ω

18 / 25

Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng?

A) 500 kV

B) 1,5 V

C) 5V

D) 220 V

19 / 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

20 / 25

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

A) 3 v

B) 12 V

C) 25 V

D) 15 V

21 / 25

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

A) 24 C

B) 15 C

C) 10 C

D) 12 C

22 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) R=ρl/S

B) Q=I^2Rt

C) R=U/I

D) I=qt

23 / 25

Elekt kuchlanishi formulasi berilgan javobni ko’rsating.

A) I=q/t

B) U=A|q

C) F=kq/r^2

D) E=U/d

24 / 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) 220 J

C) 155 J

D) 15 J

25 / 25

Rezistor so’zining manosi nima ?

A) Zaryad

B) Tok kuchi

C) Qarshilik

D) Kuchlanish

Baholash mezoni

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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

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