8-sinf Fizika 3-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 3-chorak ga 1 fikr bildirilgan 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elekt kuchlanishining ulchov birligi nima? A) Volt B) Sekund C) Kulon D) Amper 2 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) Q=I^2Rt B) R=ρl/S C) R=U/I D) I=qt 3 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektrometr B) elektroskop C) potensiyometr D) rezistor 4 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) F=kq/r^2 B) E=U/d C) I=q/t D) U=A|q 5 / 25 Elektr doimiysining son qiymati nechaga teng? A) 3*10^-19 C B) 8,85*10^-12C^2/N*m^2 C) -3*10^-19 C D) 9,1*10^-31kg 6 / 25 Elektr zaryadining o’lchov birligi nima ? A) volt B) Joul C) Amper D) kulon 7 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) Tok manbayi C) Zaryad oqimi D) To’plovchi 8 / 25 Qahrabo so’zining ma’nosi nima ? A) Somon tortuvchi B) Elektrlanuvchi C) Qattiq rezina D) Manfiy 9 / 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) 0.5 Ω C) 0.4 Ω D) 1 Ω 10 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Musbat zaryad C) Nuqtaviy zaryad D) Manfiy zaryad 11 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Beruniy C) Rezerfort D) Kulon 12 / 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 13 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 4 A B) 5 A C) 2 A D) 1.8 A 14 / 25 Bir-biridan 10sm masofada turgan sharchalardanbirining zaryadi -2*10-8 C, ikkinchisiniki esa 3*10-8C ga teng. Ular qanday kuch bilan tortishadi? A) 2*10‾⁸ N B) 270 N C) 5,4*10‾⁴ N D) 5*10‾⁸ N 15 / 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 16 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) N=mn∆z B) m=µ/N C) to'g'ri javob yo'q D) ν=m/µ 17 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 220 V dan yuqori B) 30 V dan yuqori C) 300 Vdan yuqori D) 36 V dan yuqori 18 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Elektroliz B) Ion bog’lanish C) Uchqun D) Gaz razryadi 19 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Kovalent bog’lanish B) Ionli bog’lanish C) Qutbli bog’lanish D) Elektrolitlar 20 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 54 J B) 60 J C) 50 J D) 780 J 21 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) J.Uatt B) Rezirfort C) O.Ryomer D) Nyuton 22 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Tok kuchi B) qisqa tutashuv C) Zaryadlar D) Elektr toki 23 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonastegiya B) Galvonaplastina C) eletrlolez D) Ion bog’lanish 24 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) R=I/U B) N=A/t C) I=q/t D) P=IU 25 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 1,1 kW B) 100 W C) 220 W D) 110W 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 tomonidan Wordpress Quiz plugin Fizika choraklik