8-sinf Fizika 3-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 3-chorak ga fikr bildirilmagan. 0 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Bug’ mashinasini kim kashf etgan ? A) Jems Uatt B) Kulon C) Amper D) Volta 2 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Vatt sekund B) Volt C) amper D) Paskal 3 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 500 W B) 550 W C) 55 W D) 5,5 W 4 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 60 J B) 780 J C) 54 J D) 50 J 5 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 110W B) 220 W C) 1,1 kW D) 100 W 6 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Ersted B) Volta C) Joul D) Amper 7 / 25 Faradey doimiysining son qiymatini toping ? A) 7200 C/mol B) 96500 C/mol C) 8000C/mol D) 7800 C/mol 8 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) m=µ/N B) ν=m/µ C) N=mn∆z D) to'g'ri javob yo'q 9 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Kovalent bog’lanish B) Elektrolitlar C) Ionli bog’lanish D) Qutbli bog’lanish 10 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Tok kuchi B) Zaryadlar C) qisqa tutashuv D) Elektr toki 11 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Eletroliz B) Turli eritma C) Suvli eritma D) Ion bog’lanish 12 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektrometr B) potensiyometr C) rezistor D) elektroskop 13 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) L C) U D) J 14 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,4 B) 0.017 C) 0,098 D) 0.5 15 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 12 V B) 3 v C) 15 V D) 25 V 16 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 440 Ω B) 4,4 Ω C) 220 Ω D) 2,2 Ω 17 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 4 marta kamaydi B) o`zgarmaydi C) 2 marta kamayadi D) 2 marta ortadi 18 / 25 Elektr doimiysining son qiymati nechaga teng? A) 9,1*10^-31kg B) -3*10^-19 C C) 8,85*10^-12C^2/N*m^2 D) 3*10^-19 C 19 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Elektr zaryat C) Musbat zaryad D) Bo’linmas 20 / 25 Elektr sig’imining o’lchov birligi nima ? A) Farad B) Kulon C) amper D) Sekund 21 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) volt C) kulon D) Amper 22 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryad oqimi B) Zaryadlovchi C) Tok manbayi D) To’plovchi 23 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Barametr B) spedometr C) Elektroskop D) Areometr 24 / 25 Bitta elektron zaryadi nechaga teng ? A) 9,1*10^-31C B) 8,81*10^-19 C) 1,6*10^-19C D) 2,01*10^-19C 25 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Tok kuchi B) Musbat zaryad C) Elektr toki D) Zaryad 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 Fizika choraklik