Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 619 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 1 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) F=kq/r^2 B) U=A|q C) E=U/d D) I=q/t 2 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0.5 B) 0,4 C) 0,098 D) 0.017 3 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 15 V B) 25 V C) 12 V D) 3 v 4 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 155 J B) 20 J C) 15 J D) 220 J 5 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=ρl/S B) Q=I^2Rt C) R=U/I D) I=qt 6 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,5 A B) 0.4 A C) 0,2 A D) 0,1 A 7 / 25 Rezistor so’zining manosi nima ? A) Zaryad B) Qarshilik C) Tok kuchi D) Kuchlanish 8 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 24 C B) 15 C C) 10 C D) 12 C 9 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) elektroskop B) elektrometr C) voltmeter D) ampermetr 10 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Elektroliz B) Ion bog’lanish C) Uchqun D) Gaz razryadi 11 / 25 Bug’ mashinasini kim kashf etgan ? A) Amper B) Kulon C) Volta D) Jems Uatt 12 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Suvli eritma B) Eletroliz C) Ion bog’lanish D) Turli eritma 13 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Ion bog’lanish B) eletrlolez C) Galvonaplastina D) Galvonastegiya 14 / 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 15 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Volta B) Ersted C) Joul D) Amper 16 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Kovalent bog’lanish B) Ionli bog’lanish C) Qutbli bog’lanish D) Elektrolitlar 17 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 300 Vdan yuqori B) 36 V dan yuqori C) 220 V dan yuqori D) 30 V dan yuqori 18 / 25 Elektr doimiysining son qiymati nechaga teng? A) -3*10^-19 C B) 9,1*10^-31kg C) 8,85*10^-12C^2/N*m^2 D) 3*10^-19 C 19 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) To’plovchi C) Zaryad oqimi D) Tok manbayi 20 / 25 Bir-biridan 10sm masofada turgan sharchalardanbirining zaryadi -2*10-8 C, ikkinchisiniki esa 3*10-8C ga teng. Ular qanday kuch bilan tortishadi? A) 270 N B) 2*10‾⁸ N C) 5,4*10‾⁴ N D) 5*10‾⁸ N 21 / 25 Bitta elektron massasi nechaga teng ? A) 3,36*10^-32kg B) 1,6*10^-19kg C) 8,81*10^-19kg D) 9,1*10^-31kg 22 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Nuqtaviy zaryad C) Musbat zaryad D) Elementar zaryad 23 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 5 A B) 2 A C) 1.8 A D) 4 A 24 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) kondensator B) Ampermetr C) Voltmetr D) Areometr 25 / 25 Bitta elektron zaryadi nechaga teng ? A) 2,01*10^-19C B) 9,1*10^-31C C) 1,6*10^-19C D) 8,81*10^-19 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
