Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1254 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 8 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 4 C) 3 D) 2 2 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Demokret C) Beruniy D) Rezerfort 3 / 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) 180 V B) 110 V C) 220 V D) 44 V 4 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Aristotel B) grek olimi Arximed C) yunon olimi Fales Miletskiy D) hamma javoblar to'g'ri 5 / 25 Bitta elektron zaryadi nechaga teng ? A) 2,01*10^-19C B) 1,6*10^-19C C) 9,1*10^-31C D) 8,81*10^-19 6 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta kamayadi B) 2 marta ortadi C) 4 marta kamaydi D) o`zgarmaydi 7 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 3,36*10^-32kg C) 8,81*10^-19kg D) 9,1*10^-31kg 8 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Musbat zaryad B) Elektr toki C) Tok kuchi D) Zaryad 9 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10‾⁵ N/C B) 6*10⁴ N/C C) 5,1*10⁶ N/C D) 5*10⁵ N/C 10 / 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) 1 Ω B) 0.5 Ω C) 0.2 Ω D) 0.4 Ω 11 / 25 Faradey doimiysining son qiymatini toping ? A) 7800 C/mol B) 8000C/mol C) 96500 C/mol D) 7200 C/mol 12 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Ion bog’lanish B) Galvonaplastina C) eletrlolez D) Galvonastegiya 13 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) O.Ryomer B) Rezirfort C) Nyuton D) J.Uatt 14 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) ν=m/µ B) to'g'ri javob yo'q C) N=mn∆z D) m=µ/N 15 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Ionli bog’lanish B) Kovalent bog’lanish C) Qutbli bog’lanish D) Elektrolitlar 16 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Ion bog’lanish B) Suvli eritma C) Eletroliz D) Turli eritma 17 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) R=UI B) A=UIT C) J=q/t D) Q=I^2RT 18 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Amper C) Jems Uatt D) Volta 19 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) U B) L C) R D) J 20 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) I=q/t B) E=U/d C) U=A|q D) F=kq/r^2 21 / 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? A) 0,8 A B) 2 A C) 9 A D) 4 A 22 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 440 Ω B) 4,4 Ω C) 220 Ω D) 2,2 Ω 23 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 12 V B) 15 V C) 3 v D) 25 V 24 / 25 Elekt kuchlanishining ulchov birligi nima? A) Volt B) Kulon C) Sekund D) Amper 25 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 220 J B) 20 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
