8-sinf Fizika 1-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 1-chorak ga fikr bildirilmagan. 0 8-sinf Fizika 1-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Atom so’zining ma’nosi nima ? A) Elektr zaryat B) Bo’linmas C) Musbat zaryad D) Zaryad 2 / 25 Qahrabo so’zining ma’nosi nima ? A) Elektrlanuvchi B) Manfiy C) Somon tortuvchi D) Qattiq rezina 3 / 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) 0.4 Ω C) 0.2 Ω D) 0.5 Ω 4 / 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 5 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) hamma javoblar to'g'ri B) grek olimi Arximed C) yunon olimi Fales Miletskiy D) yunon olimi Aristotel 6 / 25 bu shartli belgi qanday nomlanadi? A) Kalit B) Qo’ng’iroq C) O’tkazgichlarning tutashtirmasdan kesishishi D) Tok manbayi 7 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 2 ta B) 6 ta C) 0 ta D) 4 ta 8 / 25 Elektrlanishning necha turi mavjud ? A) 3 B) 2 C) 4 D) 5 9 / 25 Elektr sig’imining o’lchov birligi nima ? A) amper B) Sekund C) Kulon D) Farad 10 / 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) 2*10‾⁸ N B) 5,4*10‾⁴ N C) 5*10‾⁸ N D) 270 N 11 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Tok kuchi B) Zaryad C) Elektr toki D) Musbat zaryad 12 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta kamayadi B) o`zgarmaydi C) 4 marta kamaydi D) 2 marta ortadi 13 / 25 Akkumulator so’zining ma’nosi nima ? A) To’plovchi B) Zaryad oqimi C) Zaryadlovchi D) Tok manbayi 14 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) Areometr C) Voltmetr D) kondensator 15 / 25 Bitta elektron massasi nechaga teng ? A) 3,36*10^-32kg B) 1,6*10^-19kg C) 9,1*10^-31kg D) 8,81*10^-19kg 16 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10‾⁵ N/C B) 5*10⁵ N/C C) 6*10⁴ N/C D) 5,1*10⁶ N/C 17 / 25 Elektr zanjirida ketma-ket ulangan iste`molchilar qarshiliklari 80, 120 va 200 Om dan iborat. Umumiy kuchlanish 220 V bo`lsa, uchinchi iste`molchidagi kuchlanish tushuvini toping A) 110 V B) 44 V C) 180 V D) 220 V 18 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Dinomometr B) Elektroskop C) Barometr D) Elektrometr 19 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) to'g'ri javob yo'q B) Elektrlanmaydi C) Musbat D) Manfiy 20 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Nuqtaviy zaryad B) Musbat zaryad C) Manfiy zaryad D) Elementar zaryad 21 / 25 Elektr doimiysining son qiymati nechaga teng? A) -3*10^-19 C B) 8,85*10^-12C^2/N*m^2 C) 3*10^-19 C D) 9,1*10^-31kg 22 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Demokret C) Beruniy D) Rezerfort 23 / 25 Elektr zaryadining o’lchov birligi nima ? A) volt B) Joul C) kulon D) Amper 24 / 25 Bitta elektron zaryadi nechaga teng ? A) 8,81*10^-19 B) 9,1*10^-31C C) 2,01*10^-19C D) 1,6*10^-19C 25 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Barametr B) Elektroskop C) spedometr D) Areometr 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