Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1513 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) Q=I^2RT B) A=UIT C) J=q/t D) R=UI 2 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Ohangrabo-temirni tortuvchi B) Doimiy magnitlar C) Tabiy magnitlar D) Suniy magnitlar 3 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Ion bog’lanish B) Galvonaplastina C) eletrlolez D) Galvonastegiya 4 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 9mA B) 25 mA C) 7 mA D) 35,5 mA 5 / 25 Faradey doimiysining son qiymatini toping ? A) 7800 C/mol B) 7200 C/mol C) 96500 C/mol D) 8000C/mol 6 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 1,1 kW B) 220 W C) 110W D) 100 W 7 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Suvli eritma B) Turli eritma C) Eletroliz D) Ion bog’lanish 8 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 5000 J C) 3600 J D) 5600 J 9 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) m=µ/N C) N=mn∆z D) ν=m/µ 10 / 25 Natriy (Na) atomida nechta electron bor ? A) 10 ta B) 11 ta C) 12 ta D) 9 ta 11 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,1 A B) 0,2 A C) 0,5 A D) 0.4 A 12 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 220 Ω B) 2,2 Ω C) 440 Ω D) 4,4 Ω 13 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Voltmetr B) Elektrometr C) Elektroskop D) Ampermetr 14 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) L B) U C) J D) R 15 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Zaryad C) Kuchlanish D) Tok kuchi 16 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) elektrometr B) ampermetr C) voltmeter D) elektroskop 17 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) To’plovchi C) Tok manbayi D) Zaryad oqimi 18 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5,1*10⁶ N/C B) 5*10‾⁵ N/C C) 6*10⁴ N/C D) 5*10⁵ N/C 19 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Elektroskop B) Barametr C) Areometr D) spedometr 20 / 25 Elektr zaryadining o’lchov birligi nima ? A) Amper B) Joul C) kulon D) volt 21 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Aristotel B) hamma javoblar to'g'ri C) yunon olimi Fales Miletskiy D) grek olimi Arximed 22 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 9,1*10^-31kg C) 8,81*10^-19kg D) 3,36*10^-32kg 23 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Musbat B) Elektrlanmaydi C) to'g'ri javob yo'q D) Manfiy 24 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 4 ta B) 0 ta C) 6 ta D) 2 ta 25 / 25 bu shartli belgi qanday nomlanadi? A) Qo’ng’iroq B) O’tkazgichlarning tutashtirmasdan kesishishi C) Tok manbayi D) Kalit 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
