Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1476 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Rezistor so’zining manosi nima ? A) Kuchlanish B) Qarshilik C) Zaryad D) Tok kuchi 2 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 15 V B) 25 V C) 12 V D) 3 v 3 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 220 V B) 5V C) 1,5 V D) 500 kV 4 / 25 Tok kuchining o'lchov birligi nima? A) Amper B) Kulon C) Joul D) Volt 5 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0.5 B) 0,098 C) 0,4 D) 0.017 6 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 2,2 Ω B) 440 Ω C) 220 Ω D) 4,4 Ω 7 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 220 J B) 155 J C) 15 J D) 20 J 8 / 25 Elektrlanishning necha turi mavjud ? A) 2 B) 3 C) 4 D) 5 9 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Tok kuchi C) Zaryad D) Musbat zaryad 10 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Elektrlanuvchi C) Somon tortuvchi D) Manfiy 11 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektroskop B) Dinomometr C) Elektrometr D) Barometr 12 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Beruniy B) Kulon C) Rezerfort D) Demokret 13 / 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) 4 A D) 1.8 A 14 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) Areometr C) Voltmetr D) kondensator 15 / 25 Bitta elektron zaryadi nechaga teng ? A) 8,81*10^-19 B) 2,01*10^-19C C) 1,6*10^-19C D) 9,1*10^-31C 16 / 25 Akkumulator so’zining ma’nosi nima ? A) Tok manbayi B) To’plovchi C) Zaryad oqimi D) Zaryadlovchi 17 / 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) 0.4 Ω C) 1 Ω D) 0.5 Ω 18 / 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) 5,1*10⁶ N/C C) 5*10‾⁵ N/C D) 6*10⁴ N/C 19 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Ionli bog’lanish B) Qutbli bog’lanish C) Elektrolitlar D) Kovalent bog’lanish 20 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 55 W B) 550 W C) 5,5 W D) 500 W 21 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 25 mA B) 7 mA C) 35,5 mA D) 9mA 22 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 780 J B) 50 J C) 60 J D) 54 J 23 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Volta B) Joul C) Amper D) Ersted 24 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Tabiy magnitlar B) Doimiy magnitlar C) Ohangrabo-temirni tortuvchi D) Suniy magnitlar 25 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) Q=I^2RT B) A=UIT C) R=UI D) J=q/t 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
