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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

Tok kuchi formulasi keltirilgan javobni aniqlang?

A) Q=ItU

B) R=U/I

C) I=q/t

D) U=A/q

2 / 25

Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng?

A) 5V

B) 500 kV

C) 1,5 V

D) 220 V

3 / 25

Kuchlanishni o’lchaydigan asbob nima diyeladi?

A) voltmeter

B) elektroskop

C) elektrometr

D) ampermetr

4 / 25

Tok kuchining o'lchov birligi nima?

A) Joul

B) Kulon

C) Amper

D) Volt

5 / 25

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

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

A) 0,4

B) 0.017

C) 0,098

D) 0.5

6 / 25

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

A) elektrometr

B) potensiyometr

C) elektroskop

D) rezistor

7 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) R=ρl/S

B) R=U/I

C) I=qt

D) Q=I^2Rt

8 / 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) 0,4 A

D) 0,1 A

9 / 25

Elekt kuchlanishining ulchov birligi nima?

A) Sekund

B) Volt

C) Kulon

D) Amper

10 / 25

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

A) 18 Ω

B) 20 Ω

C) 44.4 Ω

D) 44 Ω

11 / 25

Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm² bo’lgan nixrom simning qarshiligini toping ?

A) 220 Ω

B) 2,2 Ω

C) 4,4 Ω

D) 440 Ω

12 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Ampermetr

B) Voltmetr

C) Elektroskop

D) Elektrometr

13 / 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) 4 A

C) 2 A

D) 9 A

14 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektrometr

B) Dinomometr

C) Barometr

D) Elektroskop

15 / 25

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

A) Barametr

B) Elektroskop

C) spedometr

D) Areometr

16 / 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) 5,4*10‾⁴ N

C) 2*10‾⁸ N

D) 5*10‾⁸ N

17 / 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

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) 220 V

B) 44 V

C) 180 V

D) 110 V

19 / 25

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

A) Elementar zaryad

B) Manfiy zaryad

C) Nuqtaviy zaryad

D) Musbat zaryad

20 / 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) 1 Ω

C) 0.2 Ω

D) 0.4 Ω

21 / 25

Elektr zaryadining o’lchov birligi nima ?

A) kulon

B) volt

C) Joul

D) Amper

22 / 25

Bitta elektron zaryadi nechaga teng ?

A) 1,6*10^-19C

B) 2,01*10^-19C

C) 8,81*10^-19

D) 9,1*10^-31C

23 / 25

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

A) Musbat zaryad

B) Tok kuchi

C) Zaryad

D) Elektr toki

24 / 25

bu shartli belgi qanday nomlanadi?

A) O’tkazgichlarning tutashtirmasdan kesishishi

B) Kalit

C) Tok manbayi

D) Qo’ng’iroq

25 / 25

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

A) 2 marta ortadi

B) 4 marta kamaydi

C) 2 marta kamayadi

D) o`zgarmaydi

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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

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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