8-sinf Fizika 4-chorak

Tomonidan yaratilgan InfoMaster

Testni Shirinboyev Temurbek tayyorladi.

Ma'lumotlaringizni kriting.

IsmTelefon raqami

1 / 25

Trubalarda va ariqlarda tor joyida suvning bosimi qanday bo'ladi?

A) Hamma joyida bir xil.

B) teng

C) Kichik

D) katta

2 / 25

Kuchlanishni o'lchash uchun qanday asbobdan foydalaniladi?

A) hamma javoblar to'g'ri

B) Elektroskop

C) voltmetr

D) Dinamometr

3 / 25

Birinchi kosmik tezlik qanchaga teng?

A) 11,1 km/s

B) 11,2 km/s

C) 8,4km/s

D) 7,9 km/s

4 / 25

Yerning massasi qanchaga teng?

A) 2*10^30

B) 5,98*10^24

C) 7,35*10^22

D) to'g'ri javob yo'q

5 / 25

Jism impulsi birligini ko'rsating

A) m/s^2

B) N*S

C) kg*m/s

D) kg

6 / 25

Yerning birinchi sun'iy yo'ldoshi qachon uchirildi?

A) 1959 yil 14 sentyabr

B) hamma zaryadlar tortiladi

C) 1957 yil 4 oktyabr

D) 1961 yil 12 aprel.

7 / 25

Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi?

A) Kovalent bog’lanish

B) Ionli bog’lanish

C) Elektrolitlar

D) Qutbli bog’lanish

8 / 25

Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi?

A) 30 V dan yuqori

B) 300 Vdan yuqori

C) 220 V dan yuqori

D) 36 V dan yuqori

9 / 25

Natriy (Na) atomida nechta electron bor ?

A) 11 ta

B) 12 ta

C) 10 ta

D) 9 ta

10 / 25

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

A) 110W

B) 1,1 kW

C) 220 W

D) 100 W

11 / 25

220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ?

A) 5,5 W

B) 550 W

C) 500 W

D) 55 W

12 / 25

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

A) Tabiy magnitlar

B) Doimiy magnitlar

C) Ohangrabo-temirni tortuvchi

D) Suniy magnitlar

13 / 25

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

A) Areometr

B) Elektroskop

C) spedometr

D) Barametr

14 / 25

Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi?

A) to'g'ri javob yo'q

B) Musbat

C) Elektrlanmaydi

D) Manfiy

15 / 25

Elektr doimiysining son qiymati nechaga teng?

A) -3*10^-19 C

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

C) 9,1*10^-31kg

D) 3*10^-19 C

16 / 25

Elektr zaryadining o’lchov birligi nima ?

A) Joul

B) Amper

C) kulon

D) volt

17 / 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) 5*10‾⁸ N

D) 2*10‾⁸ N

18 / 25

Elektrlanishning necha turi mavjud ?

A) 3

B) 5

C) 4

D) 2

19 / 25

Atom so’zining ma’nosi nima ?

A) Zaryad

B) Bo’linmas

C) Elektr zaryat

D) Musbat zaryad

20 / 25

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

A) Manfiy zaryad

B) Elementar zaryad

C) Nuqtaviy zaryad

D) Musbat zaryad

21 / 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) 6 A

D) 0,5 A

22 / 25

Tok kuchi formulasi keltirilgan javobni aniqlang?

A) I=q/t

B) Q=ItU

C) R=U/I

D) U=A/q

23 / 25

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

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

A) 0,4

B) 0,098

C) 0.5

D) 0.017

24 / 25

Rezistor so’zining manosi nima ?

A) Zaryad

B) Tok kuchi

C) Qarshilik

D) Kuchlanish

25 / 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) 2,2 Ω

D) 4,4 Ω

Baholash mezoni

86%-100% 5 baho

71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

tomonidan Wordpress Quiz plugin

Baholash mezoni

86%-100% 5 baho

71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

Author: InfoMaster

Fikr bildirish

Baholash mezoni

86%-100% 5 baho

71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

Author: InfoMaster

Tegishli xabarlar

Ko'proq tegishli maqolalar

Fikr bildirish