Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 669 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 2 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Musbat zaryad C) Tok kuchi D) Elektr toki 2 / 25 Elektr zaryadining o’lchov birligi nima ? A) kulon B) Amper C) volt D) Joul 3 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 2 ta B) 4 ta C) 6 ta D) 0 ta 4 / 25 Qahrabo so’zining ma’nosi nima ? A) Elektrlanuvchi B) Somon tortuvchi C) Qattiq rezina D) Manfiy 5 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Elektroskop B) Barametr C) Areometr D) spedometr 6 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10⁵ N/C B) 5*10‾⁵ N/C C) 6*10⁴ N/C D) 5,1*10⁶ N/C 7 / 25 Bitta elektron zaryadi nechaga teng ? A) 9,1*10^-31C B) 1,6*10^-19C C) 2,01*10^-19C D) 8,81*10^-19 8 / 25 Elektr sig’imining o’lchov birligi nima ? A) Kulon B) Farad C) amper D) Sekund 9 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 25 V B) 3 v C) 15 V D) 12 V 10 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 220 V B) 5V C) 1,5 V D) 500 kV 11 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) I=q/t C) R=U/I D) Q=ItU 12 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=U/I B) R=ρl/S C) Q=I^2Rt D) I=qt 13 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) I=q/t B) E=U/d C) F=kq/r^2 D) U=A|q 14 / 25 Tok kuchining o'lchov birligi nima? A) Amper B) Volt C) Kulon D) Joul 15 / 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) 4 A D) 9 A 16 / 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 17 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 18 Ω B) 44.4 Ω C) 44 Ω D) 20 Ω 18 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,2 A B) 0,5 A C) 0,1 A D) 0.4 A 19 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Kuchlanish C) Zaryad D) Tok kuchi 20 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 550 W B) 5,5 W C) 500 W D) 55 W 21 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 220 W B) 110W C) 100 W D) 1,1 kW 22 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 54 J B) 60 J C) 780 J D) 50 J 23 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) Q=I^2RT B) R=UI C) A=UIT D) J=q/t 24 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Turli eritma B) Ion bog’lanish C) Eletroliz D) Suvli eritma 25 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Amper C) Jems Uatt D) Volta 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
