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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 zaryadining o’lchov birligi nima ?

A) Amper

B) volt

C) kulon

D) Joul

2 / 25

Elektr sig’imining o’lchov birligi nima ?

A) Farad

B) Sekund

C) amper

D) Kulon

3 / 25

Atom tuzilishi modulini kim kashf etgan ?

A) Rezerfort

B) Beruniy

C) Kulon

D) Demokret

4 / 25

Bitta elektron zaryadi nechaga teng ?

A) 9,1*10^-31C

B) 8,81*10^-19

C) 2,01*10^-19C

D) 1,6*10^-19C

5 / 25

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

A) 4 A

B) 1.8 A

C) 2 A

D) 5 A

6 / 25

Elektr doimiysining son qiymati nechaga teng?

A) 9,1*10^-31kg

B) -3*10^-19 C

C) 3*10^-19 C

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

7 / 25

Elektrlanishning necha turi mavjud ?

A) 2

B) 5

C) 4

D) 3

8 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Elektrometr

B) Barometr

C) Elektroskop

D) Dinomometr

9 / 25

Bitta elektron massasi nechaga teng ?

A) 1,6*10^-19kg

B) 8,81*10^-19kg

C) 9,1*10^-31kg

D) 3,36*10^-32kg

10 / 25

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

A) Elementar zaryad

B) Manfiy zaryad

C) Nuqtaviy zaryad

D) Musbat zaryad

11 / 25

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

A) Areometr

B) Elektroskop

C) spedometr

D) Barametr

12 / 25

Qahrabo so’zining ma’nosi nima ?

A) Qattiq rezina

B) Somon tortuvchi

C) Manfiy

D) Elektrlanuvchi

13 / 25

Bir-biridan 10sm masofada turgan sharchalardanbirining zaryadi -2*10^-8C, ikkinchisiniki esa 3*10^-8C ga teng. Ular qanday kuch bilan tortishadi?

A) 5*10‾⁸ N

B) 2*10‾⁸ N

C) 5,4*10‾⁴ N

D) 270 N

14 / 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

15 / 25

Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi?

A) Elektrlanmaydi

B) Musbat

C) Manfiy

D) to'g'ri javob yo'q

16 / 25

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

A) 4 marta kamaydi

B) o`zgarmaydi

C) 2 marta kamayadi

D) 2 marta ortadi

17 / 25

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

A) Ampermetr

B) Voltmetr

C) Areometr

D) kondensator

18 / 25

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

A) 220 Ω

B) 440 Ω

C) 4,4 Ω

D) 2,2 Ω

19 / 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

20 / 25

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

A) 0,4 A

B) 0,5 A

C) 6 A

D) 0,1 A

21 / 25

Elektr qashiligi formulasi qaysi javobda keltirilgan?

A) Q=I^2Rt

B) I=qt

C) R=ρl/S

D) R=U/I

22 / 25

Elekt kuchlanishining ulchov birligi nima?

A) Kulon

B) Sekund

C) Amper

D) Volt

23 / 25

Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ?

A) 0,2 A

B) 0.4 A

C) 0,1 A

D) 0,5 A

24 / 25

Tok kuchining o'lchov birligi nima?

A) Amper

B) Joul

C) Volt

D) Kulon

25 / 25

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

A) rezistor

B) potensiyometr

C) elektroskop

D) elektrometr

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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