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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

Atom so’zining ma’nosi nima ?

A) Musbat zaryad

B) Zaryad

C) Elektr zaryat

D) Bo’linmas

2 / 25

Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan?

A) yunon olimi Fales Miletskiy

B) grek olimi Arximed

C) hamma javoblar to'g'ri

D) yunon olimi Aristotel

3 / 25

Elektr zaryadining o’lchov birligi nima ?

A) kulon

B) Amper

C) volt

D) Joul

4 / 25

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

A) Elektroskop

B) spedometr

C) Barametr

D) Areometr

5 / 25

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

A) 1.8 A

B) 2 A

C) 5 A

D) 4 A

6 / 25

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

A) 4 marta kamaydi

B) 2 marta kamayadi

C) 2 marta ortadi

D) o`zgarmaydi

7 / 25

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

A) Ampermetr

B) Voltmetr

C) Areometr

D) kondensator

8 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektrometr

B) Dinomometr

C) Barometr

D) Elektroskop

9 / 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) 180 V

B) 110 V

C) 44 V

D) 220 V

10 / 25

Bitta elektron zaryadi nechaga teng ?

A) 1,6*10^-19C

B) 9,1*10^-31C

C) 8,81*10^-19

D) 2,01*10^-19C

11 / 25

Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi?

A) Musbat

B) Manfiy

C) Elektrlanmaydi

D) to'g'ri javob yo'q

12 / 25

Akkumulator so’zining ma’nosi nima ?

A) Zaryadlovchi

B) Tok manbayi

C) To’plovchi

D) Zaryad oqimi

13 / 25

Qahrabo so’zining ma’nosi nima ?

A) Manfiy

B) Qattiq rezina

C) Elektrlanuvchi

D) Somon tortuvchi

14 / 25

Elektr doimiysining son qiymati nechaga teng?

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

B) -3*10^-19 C

C) 3*10^-19 C

D) 9,1*10^-31kg

15 / 25

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

A) 6*10⁴ N/C

B) 5*10‾⁵ N/C

C) 5,1*10⁶ N/C

D) 5*10⁵ N/C

16 / 25

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

A) 24 C

B) 10 C

C) 12 C

D) 15 C

17 / 25

Tok kuchining o'lchov birligi nima?

A) Amper

B) Volt

C) Kulon

D) Joul

18 / 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) 2 A

B) 0,8 A

C) 4 A

D) 9 A

19 / 25

Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng?

A) 500 kV

B) 220 V

C) 1,5 V

D) 5V

20 / 25

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

A) elektroskop

B) elektrometr

C) potensiyometr

D) rezistor

21 / 25

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

A) 44 Ω

B) 18 Ω

C) 20 Ω

D) 44.4 Ω

22 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Elektrometr

B) Elektroskop

C) Ampermetr

D) Voltmetr

23 / 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) 0,5 A

C) 6 A

D) 0,4 A

24 / 25

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

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

A) 0.5

B) 0,098

C) 0.017

D) 0,4

25 / 25

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

A) 15 J

B) 220 J

C) 20 J

D) 155 J

Baholash mezoni

86%-100% 5 baho

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

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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