Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 837 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 2 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Bug’ mashinasini kim kashf etgan ? A) Amper B) Kulon C) Jems Uatt D) Volta 2 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Kovalent bog’lanish B) Qutbli bog’lanish C) Elektrolitlar D) Ionli bog’lanish 3 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) N=mn∆z C) ν=m/µ D) m=µ/N 4 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 780 J B) 60 J C) 54 J D) 50 J 5 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Suniy magnitlar B) Doimiy magnitlar C) Ohangrabo-temirni tortuvchi D) Tabiy magnitlar 6 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 9mA B) 35,5 mA C) 7 mA D) 25 mA 7 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Paskal B) Volt C) amper D) Vatt sekund 8 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0,4 C) 0.017 D) 0.5 9 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) F=kq/r^2 B) U=A|q C) I=q/t D) E=U/d 10 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0.4 A B) 0,5 A C) 0,1 A D) 0,2 A 11 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 25 V B) 12 V C) 3 v D) 15 V 12 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) U C) L D) R 13 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) rezistor C) elektroskop D) elektrometr 14 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) R=U/I B) U=A/q C) Q=ItU D) I=q/t 15 / 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) 4 A B) 0,8 A C) 9 A D) 2 A 16 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Dinomometr B) Barometr C) Elektrometr D) Elektroskop 17 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 6 ta B) 2 ta C) 4 ta D) 0 ta 18 / 25 Elektr sig’imining o’lchov birligi nima ? A) amper B) Kulon C) Farad D) Sekund 19 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Demokret C) Beruniy D) Rezerfort 20 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Zaryad C) Tok kuchi D) Musbat zaryad 21 / 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 22 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Aristotel B) hamma javoblar to'g'ri C) grek olimi Arximed D) yunon olimi Fales Miletskiy 23 / 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 24 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 5 A B) 2 A C) 1.8 A D) 4 A 25 / 25 Elektr doimiysining son qiymati nechaga teng? A) 8,85*10^-12C^2/N*m^2 B) -3*10^-19 C C) 9,1*10^-31kg D) 3*10^-19 C 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
