Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 827 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 2 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=ρl/S B) I=qt C) R=U/I D) Q=I^2Rt 2 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) Q=ItU C) R=U/I D) I=q/t 3 / 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) 4 A C) 2 A D) 9 A 4 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 5V C) 1,5 V D) 220 V 5 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Musbat zaryad B) Zaryad C) Tok kuchi D) Elektr toki 6 / 25 Elektr sig’imining o’lchov birligi nima ? A) Sekund B) Farad C) Kulon D) amper 7 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Barametr C) Areometr D) Elektroskop 8 / 25 bu shartli belgi qanday nomlanadi? A) O’tkazgichlarning tutashtirmasdan kesishishi B) Kalit C) Tok manbayi D) Qo’ng’iroq 9 / 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 10 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) grek olimi Arximed B) yunon olimi Fales Miletskiy C) hamma javoblar to'g'ri D) yunon olimi Aristotel 11 / 25 Atom so’zining ma’nosi nima ? A) Musbat zaryad B) Bo’linmas C) Elektr zaryat D) Zaryad 12 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Kulon C) Rezerfort D) Beruniy 13 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta ortadi B) 2 marta kamayadi C) o`zgarmaydi D) 4 marta kamaydi 14 / 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 15 / 25 Akkumulator so’zining ma’nosi nima ? A) Tok manbayi B) Zaryadlovchi C) Zaryad oqimi D) To’plovchi 16 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Barometr B) Elektroskop C) Dinomometr D) Elektrometr 17 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Nuqtaviy zaryad B) Elementar zaryad C) Manfiy zaryad D) Musbat zaryad 18 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) P=IU B) N=A/t C) R=I/U D) I=q/t 19 / 25 Faradey doimiysining son qiymatini toping ? A) 7800 C/mol B) 7200 C/mol C) 8000C/mol D) 96500 C/mol 20 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 100 W B) 110W C) 220 W D) 1,1 kW 21 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 25 mA B) 35,5 mA C) 9mA D) 7 mA 22 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Ionli bog’lanish B) Qutbli bog’lanish C) Elektrolitlar D) Kovalent bog’lanish 23 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) m=µ/N B) N=mn∆z C) to'g'ri javob yo'q D) ν=m/µ 24 / 25 Natriy (Na) atomida nechta electron bor ? A) 10 ta B) 12 ta C) 9 ta D) 11 ta 25 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) O.Ryomer B) Nyuton C) Rezirfort D) J.Uatt 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
