Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1456 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Bitta elektron zaryadi nechaga teng ? A) 1,6*10^-19C B) 9,1*10^-31C C) 8,81*10^-19 D) 2,01*10^-19C 2 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektroskop B) Elektrometr C) Dinomometr D) Barometr 3 / 25 Elektr zaryadining o’lchov birligi nima ? A) Amper B) volt C) kulon D) Joul 4 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Nuqtaviy zaryad C) Elementar zaryad D) Musbat zaryad 5 / 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) 0.5 Ω C) 0.2 Ω D) 0.4 Ω 6 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Manfiy B) to'g'ri javob yo'q C) Musbat D) Elektrlanmaydi 7 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 2 ta B) 0 ta C) 6 ta D) 4 ta 8 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 1,6*10^-19kg C) 3,36*10^-32kg D) 8,81*10^-19kg 9 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 4 marta kamaydi B) 2 marta ortadi C) o`zgarmaydi D) 2 marta kamayadi 10 / 25 Elektr doimiysining son qiymati nechaga teng? A) -3*10^-19 C B) 8,85*10^-12C^2/N*m^2 C) 9,1*10^-31kg D) 3*10^-19 C 11 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) Zaryad oqimi C) To’plovchi D) Tok manbayi 12 / 25 Natriy (Na) atomida nechta electron bor ? A) 12 ta B) 10 ta C) 11 ta D) 9 ta 13 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) A=UIT B) J=q/t C) R=UI D) Q=I^2RT 14 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 110W B) 1,1 kW C) 220 W D) 100 W 15 / 25 Faradey doimiysining son qiymatini toping ? A) 7200 C/mol B) 8000C/mol C) 7800 C/mol D) 96500 C/mol 16 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) N=mn∆z C) m=µ/N D) ν=m/µ 17 / 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) 2 A B) 0,8 A C) 4 A D) 9 A 18 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektrometr B) Elektroskop C) Ampermetr D) Voltmetr 19 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 220 V B) 500 kV C) 1,5 V D) 5V 20 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektrometr B) rezistor C) elektroskop D) potensiyometr 21 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) R=U/I B) Q=ItU C) U=A/q D) I=q/t 22 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) ampermetr B) voltmeter C) elektroskop D) elektrometr 23 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,2 A B) 0,5 A C) 0.4 A D) 0,1 A 24 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 3 v B) 25 V C) 12 V D) 15 V 25 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 44 Ω B) 18 Ω C) 20 Ω D) 44.4 Ω 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
