Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 354 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) ν=m/µ C) N=mn∆z D) m=µ/N 2 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) R=I/U B) N=A/t C) P=IU D) I=q/t 3 / 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 4 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 36 V dan yuqori B) 300 Vdan yuqori C) 30 V dan yuqori D) 220 V dan yuqori 5 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) J.Uatt B) Rezirfort C) O.Ryomer D) Nyuton 6 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) Q=I^2RT B) A=UIT C) R=UI D) J=q/t 7 / 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) 35,5 mA D) 25 mA 8 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Elektrolitlar B) Qutbli bog’lanish C) Ionli bog’lanish D) Kovalent bog’lanish 9 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Elektroliz B) Ion bog’lanish C) Gaz razryadi D) Uchqun 10 / 25 Atom so’zining ma’nosi nima ? A) Musbat zaryad B) Bo’linmas C) Zaryad D) Elektr zaryat 11 / 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*10⁵ N/C D) 5*10‾⁵ N/C 12 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Kulon C) Beruniy D) Rezerfort 13 / 25 Elektrlanishning necha turi mavjud ? A) 2 B) 3 C) 4 D) 5 14 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) kondensator B) Areometr C) Voltmetr D) Ampermetr 15 / 25 Elektr zaryadining o’lchov birligi nima ? A) kulon B) Amper C) volt D) Joul 16 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Barometr B) Dinomometr C) Elektrometr D) Elektroskop 17 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Somon tortuvchi C) Manfiy D) Elektrlanuvchi 18 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Tok kuchi B) Musbat zaryad C) Elektr toki D) Zaryad 19 / 25 bu shartli belgi qanday nomlanadi? A) Kalit B) Qo’ng’iroq C) O’tkazgichlarning tutashtirmasdan kesishishi D) Tok manbayi 20 / 25 Bitta elektron massasi nechaga teng ? A) 8,81*10^-19kg B) 3,36*10^-32kg C) 9,1*10^-31kg D) 1,6*10^-19kg 21 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Manfiy zaryad C) Nuqtaviy zaryad D) Musbat zaryad 22 / 25 Uzunligi 1 m, ko’ndalang kesimining yuzi 0,4 mm2 bo’lgan nikelin simning uchlaridagi kuchlanish 2 V gat eng. Shu elektr zanjir orqali o’tayotgan tok kuchini aniqlang? A) 0,8 A B) 9 A C) 4 A D) 2 A 23 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) R=U/I B) I=q/t C) U=A/q D) Q=ItU 24 / 25 Tok kuchining o'lchov birligi nima? A) Volt B) Amper C) Kulon D) Joul 25 / 25 Elekt kuchlanishining ulchov birligi nima? A) Amper B) Kulon C) Volt D) Sekund 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 Author: InfoMaster Foydali bo'lsa mamnunmiz
