Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 390 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 50 J B) 54 J C) 60 J D) 780 J 2 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 110W B) 100 W C) 1,1 kW D) 220 W 3 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) R=UI B) A=UIT C) J=q/t D) Q=I^2RT 4 / 25 Bug’ mashinasini kim kashf etgan ? A) Volta B) Jems Uatt C) Amper D) Kulon 5 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Elektr toki B) qisqa tutashuv C) Tok kuchi D) Zaryadlar 6 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Volta B) Ersted C) Joul D) Amper 7 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Gaz razryadi B) Ion bog’lanish C) Uchqun D) Elektroliz 8 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Ion bog’lanish B) Galvonaplastina C) Galvonastegiya D) eletrlolez 9 / 25 Natriy (Na) atomida nechta electron bor ? A) 12 ta B) 11 ta C) 9 ta D) 10 ta 10 / 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 11 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) U B) L C) R D) J 12 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) ampermetr B) voltmeter C) elektroskop D) elektrometr 13 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektrometr B) potensiyometr C) elektroskop D) rezistor 14 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektrometr B) Elektroskop C) Ampermetr D) Voltmetr 15 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0,4 C) 0.017 D) 0.5 16 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) I=qt B) Q=I^2Rt C) R=ρl/S D) R=U/I 17 / 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 18 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) hamma javoblar to'g'ri B) grek olimi Arximed C) yunon olimi Aristotel D) yunon olimi Fales Miletskiy 19 / 25 Bitta elektron massasi nechaga teng ? A) 8,81*10^-19kg B) 9,1*10^-31kg C) 3,36*10^-32kg D) 1,6*10^-19kg 20 / 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) 0.4 Ω C) 0.2 Ω D) 1 Ω 21 / 25 Qahrabo so’zining ma’nosi nima ? A) Elektrlanuvchi B) Somon tortuvchi C) Qattiq rezina D) Manfiy 22 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Elementar zaryad C) Musbat zaryad D) Nuqtaviy zaryad 23 / 25 Elektr sig’imining o’lchov birligi nima ? A) Farad B) Kulon C) Sekund D) amper 24 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Musbat zaryad C) Tok kuchi D) Zaryad 25 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Barometr B) Elektroskop C) Dinomometr D) Elektrometr 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
