Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 358 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Atom so’zining ma’nosi nima ? A) Bo’linmas B) Elektr zaryat C) Zaryad D) Musbat zaryad 2 / 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 3 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) kondensator B) Ampermetr C) Voltmetr D) Areometr 4 / 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 5 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Barametr C) Areometr D) Elektroskop 6 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Rezerfort C) Kulon D) Beruniy 7 / 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) 5 A C) 1.8 A D) 4 A 8 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 1,6*10^-19kg C) 8,81*10^-19kg D) 3,36*10^-32kg 9 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) Zaryad oqimi C) Tok manbayi D) To’plovchi 10 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Musbat zaryad B) Manfiy zaryad C) Elementar zaryad D) Nuqtaviy zaryad 11 / 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) 5,1*10⁶ N/C D) 6*10⁴ N/C 12 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 5600 J C) 3600 J D) 5000 J 13 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Jems Uatt C) Amper D) Volta 14 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Suvli eritma B) Ion bog’lanish C) Eletroliz D) Turli eritma 15 / 25 Natriy (Na) atomida nechta electron bor ? A) 11 ta B) 10 ta C) 9 ta D) 12 ta 16 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 780 J B) 60 J C) 50 J D) 54 J 17 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) N=mn∆z C) ν=m/µ D) m=µ/N 18 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Amper B) Ersted C) Volta D) Joul 19 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,4 B) 0.5 C) 0,098 D) 0.017 20 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektroskop B) rezistor C) elektrometr D) potensiyometr 21 / 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 22 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 2,2 Ω B) 4,4 Ω C) 220 Ω D) 440 Ω 23 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) U C) L D) J 24 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 10 C B) 24 C C) 15 C D) 12 C 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 Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz
