8-sinf Fizika 4-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 4-chorak ga fikr bildirilmagan. 26 8-sinf Fizika 4-chorak Testni Shirinboyev Temurbek tayyorladi. Ma'lumotlaringizni kriting. IsmTelefon raqami 1 / 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 2 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Joul B) Volta C) Amper D) Ersted 3 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 55 W B) 500 W C) 5,5 W D) 550 W 4 / 25 1Vatt.soat necha Jaulga teng ? A) 3600 J B) 360 J C) 5600 J D) 5000 J 5 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Tok kuchi B) Elektr toki C) qisqa tutashuv D) Zaryadlar 6 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 100 W B) 1,1 kW C) 110W D) 220 W 7 / 25 Elekt kuchlanishining ulchov birligi nima? A) Kulon B) Sekund C) Volt D) Amper 8 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) U=A|q B) E=U/d C) I=q/t D) F=kq/r^2 9 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0.5 B) 0.017 C) 0,098 D) 0,4 10 / 25 Atmosfera bosimi qanday asbob bilan o'lchanadi? A) laktometr B) Termometr C) Barometr D) Monometr 11 / 25 Atom qanday zaryadlardan tuzilgan? A) yadro,proton B) yadrodan va manfiy zaryadlangan elektrondan C) to'g'ri javob yo'q D) proton,neytron 12 / 25 Zaryadlangan jism atrofida nima hosil bo'ladi? A) hamma zaryadlar tortiladi B) Elektr maydoni C) magnit maydoni D) hech nima hosil bo'lmaydi 13 / 25 Quyidagi formulalardan qaysi biri kuch momentini formulasi. A) F=mg B) v=s/t C) M=FL D) M=F/L 14 / 25 Yerning massasi qanchaga teng? A) 2*10^30 B) to'g'ri javob yo'q C) 5,98*10^24 D) 7,35*10^22 15 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Areometr B) Elektroskop C) spedometr D) Barametr 16 / 25 Qahrabo so’zining ma’nosi nima ? A) Manfiy B) Qattiq rezina C) Elektrlanuvchi D) Somon tortuvchi 17 / 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) 4 A C) 5 A D) 1.8 A 18 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Rezerfort B) Kulon C) Demokret D) Beruniy 19 / 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) 0.4 Ω D) 0.2 Ω 20 / 25 Akkumulator so’zining ma’nosi nima ? A) Tok manbayi B) To’plovchi C) Zaryad oqimi D) Zaryadlovchi 21 / 25 Elektrlanishning necha turi mavjud ? A) 4 B) 5 C) 3 D) 2 22 / 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) 5,4*10‾⁴ N B) 2*10‾⁸ N C) 5*10‾⁸ N D) 270 N 23 / 25 Bitta elektron massasi nechaga teng ? A) 8,81*10^-19kg B) 1,6*10^-19kg C) 3,36*10^-32kg D) 9,1*10^-31kg 24 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 2 ta B) 0 ta C) 6 ta D) 4 ta 25 / 25 Atom so’zining ma’nosi nima ? A) Musbat zaryad B) Elektr zaryat C) Zaryad D) Bo’linmas 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 Fizika choraklik