Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1532 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 2 A C) 9 A D) 4 A 2 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 220 Ω B) 2,2 Ω C) 4,4 Ω D) 440 Ω 3 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) elektrometr B) ampermetr C) elektroskop D) voltmeter 4 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) I=q/t C) R=U/I D) Q=ItU 5 / 25 Tok kuchining o'lchov birligi nima? A) Joul B) Kulon C) Volt D) Amper 6 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,1 A B) 0,4 A C) 6 A D) 0,5 A 7 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) E=U/d B) I=q/t C) F=kq/r^2 D) U=A|q 8 / 25 bu shartli belgi qanday nomlanadi? A) Tok manbayi B) Qo’ng’iroq C) O’tkazgichlarning tutashtirmasdan kesishishi D) Kalit 9 / 25 Qahrabo so’zining ma’nosi nima ? A) Manfiy B) Qattiq rezina C) Somon tortuvchi D) Elektrlanuvchi 10 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) grek olimi Arximed B) hamma javoblar to'g'ri C) yunon olimi Aristotel D) yunon olimi Fales Miletskiy 11 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Musbat zaryad B) Nuqtaviy zaryad C) Manfiy zaryad D) Elementar zaryad 12 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Musbat B) Elektrlanmaydi C) to'g'ri javob yo'q D) Manfiy 13 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Barametr C) Areometr D) Elektroskop 14 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Areometr B) kondensator C) Ampermetr D) Voltmetr 15 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) Amper C) kulon D) volt 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) 0.5 Ω B) 1 Ω C) 0.2 Ω D) 0.4 Ω 17 / 25 Bitta elektron zaryadi nechaga teng ? A) 2,01*10^-19C B) 1,6*10^-19C C) 8,81*10^-19 D) 9,1*10^-31C 18 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 3 C) 4 D) 2 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) 780 J C) 54 J D) 60 J 20 / 25 Faradey doimiysining son qiymatini toping ? A) 8000C/mol B) 7800 C/mol C) 96500 C/mol D) 7200 C/mol 21 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) I=q/t B) R=I/U C) P=IU D) N=A/t 22 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Rezirfort B) Nyuton C) O.Ryomer D) J.Uatt 23 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Uchqun B) Gaz razryadi C) Elektroliz D) Ion bog’lanish 24 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 3600 J C) 5000 J D) 5600 J 25 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 550 W B) 55 W C) 5,5 W D) 500 W 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
