Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 638 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 1 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 4 A B) 1.8 A C) 5 A D) 2 A 2 / 25 Elektrlanishning necha turi mavjud ? A) 4 B) 2 C) 5 D) 3 3 / 25 Elektr doimiysining son qiymati nechaga teng? A) 8,85*10^-12C^2/N*m^2 B) 9,1*10^-31kg C) -3*10^-19 C D) 3*10^-19 C 4 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 3,36*10^-32kg C) 1,6*10^-19kg D) 8,81*10^-19kg 5 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta kamayadi B) o`zgarmaydi C) 2 marta ortadi D) 4 marta kamaydi 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 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektroskop B) Dinomometr C) Barometr D) Elektrometr 8 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) grek olimi Arximed B) hamma javoblar to'g'ri C) yunon olimi Fales Miletskiy D) yunon olimi Aristotel 9 / 25 Akkumulator so’zining ma’nosi nima ? A) To’plovchi B) Zaryad oqimi C) Tok manbayi D) Zaryadlovchi 10 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Beruniy B) Demokret C) Rezerfort D) Kulon 11 / 25 Faradey doimiysining son qiymatini toping ? A) 7200 C/mol B) 7800 C/mol C) 8000C/mol D) 96500 C/mol 12 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) A=UIT B) R=UI C) Q=I^2RT D) J=q/t 13 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Turli eritma B) Ion bog’lanish C) Suvli eritma D) Eletroliz 14 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Elektroliz B) Gaz razryadi C) Ion bog’lanish D) Uchqun 15 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) ν=m/µ C) N=mn∆z D) m=µ/N 16 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Vatt sekund B) Volt C) amper D) Paskal 17 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0.5 B) 0.017 C) 0,4 D) 0,098 18 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Zaryad C) Kuchlanish D) Tok kuchi 19 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0.4 A B) 0,2 A C) 0,5 A D) 0,1 A 20 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 2,2 Ω B) 440 Ω C) 4,4 Ω D) 220 Ω 21 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) U=A|q B) I=q/t C) F=kq/r^2 D) E=U/d 22 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) rezistor C) elektrometr D) elektroskop 23 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 15 J B) 155 J C) 20 J D) 220 J 24 / 25 Elekt kuchlanishining ulchov birligi nima? A) Amper B) Sekund C) Kulon D) Volt 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
