Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 646 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 1 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Areometr C) Barametr D) Elektroskop 2 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 4 C) 3 D) 2 3 / 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 4 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 2 A B) 1.8 A C) 5 A D) 4 A 5 / 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 ortadi D) 2 marta kamayadi 6 / 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) 0.4 Ω B) 0.2 Ω C) 0.5 Ω D) 1 Ω 7 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) volt C) kulon D) Amper 8 / 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) 110 V B) 180 V C) 220 V D) 44 V 9 / 25 Atom so’zining ma’nosi nima ? A) Bo’linmas B) Zaryad C) Elektr zaryat D) Musbat zaryad 10 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10⁵ N/C B) 6*10⁴ N/C C) 5*10‾⁵ N/C D) 5,1*10⁶ N/C 11 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Volt B) Paskal C) amper D) Vatt sekund 12 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Elektr toki B) Zaryadlar C) Tok kuchi D) qisqa tutashuv 13 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Rezirfort B) J.Uatt C) Nyuton D) O.Ryomer 14 / 25 Bug’ mashinasini kim kashf etgan ? A) Jems Uatt B) Amper C) Volta D) Kulon 15 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Ion bog’lanish B) Gaz razryadi C) Elektroliz D) Uchqun 16 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Elektrolitlar B) Ionli bog’lanish C) Qutbli bog’lanish D) Kovalent bog’lanish 17 / 25 Faradey doimiysining son qiymatini toping ? A) 7800 C/mol B) 7200 C/mol C) 96500 C/mol D) 8000C/mol 18 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) ν=m/µ C) m=µ/N D) N=mn∆z 19 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonaplastina B) Galvonastegiya C) Ion bog’lanish D) eletrlolez 20 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) rezistor B) elektroskop C) elektrometr D) potensiyometr 21 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 6 A B) 0,1 A C) 0,4 A D) 0,5 A 22 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) I=qt B) R=U/I C) R=ρl/S D) Q=I^2Rt 23 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) voltmeter B) elektroskop C) ampermetr D) elektrometr 24 / 25 Tok kuchining o'lchov birligi nima? A) Volt B) Amper C) Joul D) Kulon 25 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 20 J B) 220 J C) 155 J D) 15 J 0% Testni qayta ishga tushiring Baholash mezoni 86%-100% 5 baho 71%-85% 4 baho 56%-70% 3 baho 55% va kamiga 2 baho Fikr-mulohaza yuboring Author: InfoMaster Foydali bo'lsa mamnunmiz
