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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

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) 0,4 A

C) 0,5 A

D) 6 A

2 / 25

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

A) 10 C

B) 15 C

C) 12 C

D) 24 C

3 / 25

Elekt kuchlanishining ulchov birligi nima?

A) Kulon

B) Volt

C) Amper

D) Sekund

4 / 25

Tok kuchining o'lchov birligi nima?

A) Joul

B) Kulon

C) Amper

D) Volt

5 / 25

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

A) 2,2 Ω

B) 4,4 Ω

C) 220 Ω

D) 440 Ω

6 / 25

Tok kuchi formulasi keltirilgan javobni aniqlang?

A) I=q/t

B) Q=ItU

C) U=A/q

D) R=U/I

7 / 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

8 / 25

Rezistor so’zining manosi nima ?

A) Zaryad

B) Tok kuchi

C) Kuchlanish

D) Qarshilik

9 / 25

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

A) rezistor

B) elektroskop

C) elektrometr

D) potensiyometr

10 / 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) 12 V

C) 25 V

D) 3 v

11 / 25

Tok kuchini o’lchaydigan asbob qanday nomlanadi ?

A) Elektrometr

B) Elektroskop

C) Ampermetr

D) Voltmetr

12 / 25

Kuchlanishni o’lchaydigan asbob nima diyeladi?

A) elektroskop

B) ampermetr

C) voltmeter

D) elektrometr

13 / 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

14 / 25

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

A) Elektr toki

B) Zaryad

C) Musbat zaryad

D) Tok kuchi

15 / 25

Akkumulator so’zining ma’nosi nima ?

A) Tok manbayi

B) Zaryadlovchi

C) Zaryad oqimi

D) To’plovchi

16 / 25

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

A) 2 marta kamayadi

B) o`zgarmaydi

C) 4 marta kamaydi

D) 2 marta ortadi

17 / 25

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

A) Manfiy zaryad

B) Nuqtaviy zaryad

C) Musbat zaryad

D) Elementar zaryad

18 / 25

Atom so’zining ma’nosi nima ?

A) Musbat zaryad

B) Elektr zaryat

C) Bo’linmas

D) Zaryad

19 / 25

Elektr sig’imining o’lchov birligi nima ?

A) Farad

B) Kulon

C) Sekund

D) amper

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) 0.4 Ω

D) 0.2 Ω

21 / 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

22 / 25

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

A) 5 A

B) 1.8 A

C) 2 A

D) 4 A

23 / 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*10‾⁵ N/C

C) 5*10⁵ N/C

D) 6*10⁴ N/C

24 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Dinomometr

B) Barometr

C) Elektrometr

D) Elektroskop

25 / 25

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

A) Elektroskop

B) Areometr

C) Barametr

D) spedometr

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

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