8-sinf Fizika 3-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 3-chorak ga fikr bildirilmagan. 93 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) I=q/t B) F=kq/r^2 C) E=U/d D) U=A|q 2 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,1 A B) 0.4 A C) 0,2 A D) 0,5 A 3 / 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 4 / 25 Rezistor so’zining manosi nima ? A) Tok kuchi B) Zaryad C) Qarshilik D) Kuchlanish 5 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) L C) U D) R 6 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) voltmeter B) elektrometr C) elektroskop D) ampermetr 7 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) Q=ItU C) R=U/I D) I=q/t 8 / 25 Elekt kuchlanishining ulchov birligi nima? A) Volt B) Amper C) Kulon D) Sekund 9 / 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) 15 J C) 155 J D) 220 J 10 / 25 Akkumulator so’zining ma’nosi nima ? A) To’plovchi B) Zaryadlovchi C) Zaryad oqimi D) Tok manbayi 11 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Zaryad C) Tok kuchi D) Musbat zaryad 12 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 4 ta B) 0 ta C) 2 ta D) 6 ta 13 / 25 Bitta elektron massasi nechaga teng ? A) 3,36*10^-32kg B) 1,6*10^-19kg C) 8,81*10^-19kg D) 9,1*10^-31kg 14 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 3 C) 4 D) 2 15 / 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 16 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Rezerfort C) Kulon D) Beruniy 17 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) o`zgarmaydi B) 4 marta kamaydi C) 2 marta ortadi D) 2 marta kamayadi 18 / 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) 0.2 Ω C) 1 Ω D) 0.4 Ω 19 / 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 20 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Areometr B) Ampermetr C) Voltmetr D) kondensator 21 / 25 Natriy (Na) atomida nechta electron bor ? A) 9 ta B) 10 ta C) 11 ta D) 12 ta 22 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Doimiy magnitlar B) Suniy magnitlar C) Tabiy magnitlar D) Ohangrabo-temirni tortuvchi 23 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 5,5 W B) 500 W C) 550 W D) 55 W 24 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 110W B) 1,1 kW C) 220 W D) 100 W 25 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Volta B) Ersted C) Amper D) Joul 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