8-sinf Fizika 3-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 3-chorak ga 1 fikr bildirilgan 4 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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*10‾⁸ N B) 2*10‾⁸ N C) 5,4*10‾⁴ N D) 270 N 2 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) volt C) Amper D) kulon 3 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 3,36*10^-32kg C) 1,6*10^-19kg D) 8,81*10^-19kg 4 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Areometr B) Barametr C) spedometr D) Elektroskop 5 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 1.8 A B) 5 A C) 4 A D) 2 A 6 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Nuqtaviy zaryad C) Musbat zaryad D) Elementar zaryad 7 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 2 C) 4 D) 3 8 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta ortadi B) 2 marta kamayadi C) o`zgarmaydi D) 4 marta kamaydi 9 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 0 ta B) 6 ta C) 2 ta D) 4 ta 10 / 25 Akkumulator so’zining ma’nosi nima ? A) To’plovchi B) Tok manbayi C) Zaryad oqimi D) Zaryadlovchi 11 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Fales Miletskiy B) grek olimi Arximed C) yunon olimi Aristotel D) hamma javoblar to'g'ri 12 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) Voltmetr C) kondensator D) Areometr 13 / 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) 1 Ω C) 0.4 Ω D) 0.5 Ω 14 / 25 Qahrabo so’zining ma’nosi nima ? A) Somon tortuvchi B) Elektrlanuvchi C) Manfiy D) Qattiq rezina 15 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) R=UI B) A=UIT C) Q=I^2RT D) J=q/t 16 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) R=I/U B) N=A/t C) P=IU D) I=q/t 17 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 7 mA B) 35,5 mA C) 25 mA D) 9mA 18 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Gaz razryadi B) Ion bog’lanish C) Elektroliz D) Uchqun 19 / 25 Tok kuchining o'lchov birligi nima? A) Amper B) Volt C) Joul D) Kulon 20 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 5V C) 1,5 V D) 220 V 21 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,1 A B) 6 A C) 0,5 A D) 0,4 A 22 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) R=U/I C) Q=ItU D) I=q/t 23 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,5 A B) 0,1 A C) 0,2 A D) 0.4 A 24 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0,4 C) 0.5 D) 0.017 25 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 15 J B) 20 J C) 220 J D) 155 J 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
