Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1020 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 3 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 4 A C) 2 A D) 1.8 A 2 / 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) 6*10⁴ N/C C) 5*10‾⁵ N/C D) 5*10⁵ N/C 3 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Elektroskop B) Barametr C) spedometr D) Areometr 4 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Rezerfort B) Demokret C) Beruniy D) Kulon 5 / 25 bu shartli belgi qanday nomlanadi? A) Qo’ng’iroq B) O’tkazgichlarning tutashtirmasdan kesishishi C) Kalit D) Tok manbayi 6 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 0 ta B) 4 ta C) 2 ta D) 6 ta 7 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Fales Miletskiy B) grek olimi Arximed C) hamma javoblar to'g'ri D) yunon olimi Aristotel 8 / 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) 180 V C) 220 V D) 44 V 9 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 220 W B) 100 W C) 110W D) 1,1 kW 10 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonaplastina B) eletrlolez C) Galvonastegiya D) Ion bog’lanish 11 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) N=A/t B) I=q/t C) R=I/U D) P=IU 12 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 550 W B) 500 W C) 55 W D) 5,5 W 13 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Vatt sekund B) amper C) Paskal D) Volt 14 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Eletroliz B) Turli eritma C) Ion bog’lanish D) Suvli eritma 15 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 60 J B) 54 J C) 780 J D) 50 J 16 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) U B) R C) L D) J 17 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 3 v B) 25 V C) 12 V D) 15 V 18 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=U/I B) R=ρl/S C) Q=I^2Rt D) I=qt 19 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 24 C B) 15 C C) 10 C D) 12 C 20 / 25 Tok kuchining o'lchov birligi nima? A) Amper B) Joul C) Volt D) Kulon 21 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,4 A B) 0,5 A C) 6 A D) 0,1 A 22 / 25 Elekt kuchlanishining ulchov birligi nima? A) Kulon B) Volt C) Amper D) Sekund 23 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Zaryad C) Tok kuchi D) Kuchlanish 24 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Ampermetr B) Voltmetr C) Elektrometr D) Elektroskop 25 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) Q=ItU B) U=A/q C) I=q/t D) R=U/I 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
