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8-sinf Fizika 4-chorak

InfoMaster

May 5, 2021

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8-sinf Fizika 4-chorak

Testni Shirinboyev Temurbek tayyorladi.

Ma'lumotlaringizni kriting.

IsmTelefon raqami

1 / 25

Yerning birinchi sun'iy yo'ldoshi qachon uchirildi?

A) hamma zaryadlar tortiladi

B) 1961 yil 12 aprel.

C) 1959 yil 14 sentyabr

D) 1957 yil 4 oktyabr

2 / 25

Jismlarning elektrlanganligini payqovchi asbob qaysi javobda keltirilgan?

A) Elektroskop

B) Voltmetr

C) Ampermetr

D) hamma javob to'g'ri

3 / 25

Paskal qonunidan amalda qayerlarda foydalanadi?

A) A, B javob to'g'ri.

B) to'g'ri javob yo'q

C) Gidrovlik tormozlarda.

D) Gidrovlik press, pnevmatik tormoz

4 / 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

5 / 25

Rezistor so’zining manosi nima ?

A) Zaryad

B) Kuchlanish

C) Tok kuchi

D) Qarshilik

6 / 25

Tok kuchi formulasi keltirilgan javobni aniqlang?

A) U=A/q

B) R=U/I

C) Q=ItU

D) I=q/t

7 / 25

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

A) 12 C

B) 15 C

C) 24 C

D) 10 C

8 / 25

Kuchlanishni o’lchaydigan asbob nima diyeladi?

A) elektrometr

B) ampermetr

C) elektroskop

D) voltmeter

9 / 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

10 / 25

Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ?

A) 0,2 A

B) 0,1 A

C) 0.4 A

D) 0,5 A

11 / 25

Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta?

A) 4 ta

B) 0 ta

C) 6 ta

D) 2 ta

12 / 25

Bitta elektron massasi nechaga teng ?

A) 8,81*10^-19kg

B) 1,6*10^-19kg

C) 9,1*10^-31kg

D) 3,36*10^-32kg

13 / 25

Elektr doimiysining son qiymati nechaga teng?

A) 9,1*10^-31kg

B) 3*10^-19 C

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

D) -3*10^-19 C

14 / 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) 4 A

D) 2 A

15 / 25

Atom so’zining ma’nosi nima ?

A) Elektr zaryat

B) Zaryad

C) Musbat zaryad

D) Bo’linmas

16 / 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) 0.2 Ω

B) 0.4 Ω

C) 1 Ω

D) 0.5 Ω

17 / 25

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

A) Musbat zaryad

B) Tok kuchi

C) Elektr toki

D) Zaryad

18 / 25

Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ?

A) Dinomometr

B) Barometr

C) Elektroskop

D) Elektrometr

19 / 25

Elektr toki bajargan ishining asosiy birligi nima?

A) amper

B) Paskal

C) Vatt sekund

D) Volt

20 / 25

Elektr tokining bajargan ishini formulasini ko’rsating toping ?

A) R=UI

B) J=q/t

C) A=UIT

D) Q=I^2RT

21 / 25

1Vatt.soat necha Jaulga teng ?

A) 5600 J

B) 3600 J

C) 360 J

D) 5000 J

22 / 25

Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ?

A) Galvonaplastina

B) Ion bog’lanish

C) Galvonastegiya

D) eletrlolez

23 / 25

Faradey doimiysining son qiymatini toping ?

A) 8000C/mol

B) 96500 C/mol

C) 7800 C/mol

D) 7200 C/mol

24 / 25

Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ?

A) Doimiy magnitlar

B) Tabiy magnitlar

C) Suniy magnitlar

D) Ohangrabo-temirni tortuvchi

25 / 25

220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ?

A) 1,1 kW

B) 100 W

C) 110W

D) 220 W

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 4-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 3-chorak

5-sinf Matematika 4-chorak

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