8-sinf Fizika 4-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 4-chorak ga fikr bildirilmagan. 15 8-sinf Fizika 4-chorak Testni Shirinboyev Temurbek tayyorladi. Ma'lumotlaringizni kriting. IsmTelefon raqami 1 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 780 J B) 60 J C) 50 J D) 54 J 2 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 30 V dan yuqori B) 36 V dan yuqori C) 300 Vdan yuqori D) 220 V dan yuqori 3 / 25 Bug’ mashinasini kim kashf etgan ? A) Jems Uatt B) Kulon C) Volta D) Amper 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) 7 mA C) 25 mA D) 35,5 mA 5 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Ion bog’lanish B) Gaz razryadi C) Uchqun D) Elektroliz 6 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Elektrolitlar B) Ionli bog’lanish C) Kovalent bog’lanish D) Qutbli bog’lanish 7 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 55 W B) 5,5 W C) 500 W D) 550 W 8 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) I=q/t B) R=I/U C) N=A/t D) P=IU 9 / 25 Atmosfera bosimi qanday asbob bilan o'lchanadi? A) Monometr B) Barometr C) laktometr D) Termometr 10 / 25 Birinchi kosmik tezlik qanchaga teng? A) 11,2 km/s B) 8,4km/s C) 7,9 km/s D) 11,1 km/s 11 / 25 Yerning massasi qanchaga teng? A) to'g'ri javob yo'q B) 2*10^30 C) 7,35*10^22 D) 5,98*10^24 12 / 25 Kuch impulsini topish formulasini ko'rsating? A) F=m*a B) I=F*t C) P=m*v D) F=m*g 13 / 25 Jism impulsi birligini ko'rsating A) kg B) kg*m/s C) N*S D) m/s^2 14 / 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) 220 V B) 180 V C) 44 V D) 110 V 15 / 25 Qahrabo so’zining ma’nosi nima ? A) Somon tortuvchi B) Manfiy C) Qattiq rezina D) Elektrlanuvchi 16 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Musbat zaryad C) Elementar zaryad D) Nuqtaviy zaryad 17 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 6*10⁴ N/C B) 5,1*10⁶ N/C C) 5*10⁵ N/C D) 5*10‾⁵ N/C 18 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Zaryad C) Tok kuchi D) Musbat zaryad 19 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Rezerfort B) Kulon C) Demokret D) Beruniy 20 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Barametr C) Areometr D) Elektroskop 21 / 25 bu shartli belgi qanday nomlanadi? A) Kalit B) Tok manbayi C) O’tkazgichlarning tutashtirmasdan kesishishi D) Qo’ng’iroq 22 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,4 B) 0.5 C) 0.017 D) 0,098 23 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Zaryad C) Kuchlanish D) Tok kuchi 24 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektroskop B) Elektrometr C) Ampermetr D) Voltmetr 25 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) elektrometr B) elektroskop C) voltmeter D) ampermetr 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