Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1540 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 10 C B) 15 C C) 24 C D) 12 C 2 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) L B) J C) R D) U 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 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Areometr C) Barametr D) Elektroskop 5 / 25 Bir-biridan 10sm masofada turgan sharchalardanbirining zaryadi -2*10-8 C, ikkinchisiniki esa 3*10-8C ga teng. Ular qanday kuch bilan tortishadi? A) 2*10‾⁸ N B) 5,4*10‾⁴ N C) 5*10‾⁸ N D) 270 N 6 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Bo’linmas C) Musbat zaryad D) Elektr zaryat 7 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Barometr B) Elektroskop C) Elektrometr D) Dinomometr 8 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) kulon C) volt D) Amper 9 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) o`zgarmaydi B) 2 marta kamayadi C) 4 marta kamaydi D) 2 marta ortadi 10 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 3,36*10^-32kg C) 9,1*10^-31kg D) 8,81*10^-19kg 11 / 25 Elektrlanishning necha turi mavjud ? A) 4 B) 2 C) 5 D) 3 12 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Somon tortuvchi C) Elektrlanuvchi D) Manfiy 13 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 2 A B) 1.8 A C) 5 A D) 4 A 14 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 6 ta B) 4 ta C) 0 ta D) 2 ta 15 / 25 Elektr doimiysining son qiymati nechaga teng? A) 3*10^-19 C B) -3*10^-19 C C) 8,85*10^-12C^2/N*m^2 D) 9,1*10^-31kg 16 / 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) 0.4 Ω B) 1 Ω C) 0.2 Ω D) 0.5 Ω 17 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Elektr toki C) Musbat zaryad D) Tok kuchi 18 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Nyuton B) J.Uatt C) O.Ryomer D) Rezirfort 19 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 50 J B) 54 J C) 60 J D) 780 J 20 / 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) 9mA C) 7 mA D) 35,5 mA 21 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Gaz razryadi B) Elektroliz C) Uchqun D) Ion bog’lanish 22 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 1,1 kW B) 100 W C) 220 W D) 110W 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 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 25 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Elektr toki B) qisqa tutashuv C) Tok kuchi D) Zaryadlar 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
