Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1258 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 8 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 500 W B) 55 W C) 5,5 W D) 550 W 2 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Paskal B) Volt C) amper D) Vatt sekund 3 / 25 Natriy (Na) atomida nechta electron bor ? A) 11 ta B) 10 ta C) 9 ta D) 12 ta 4 / 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 5 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) R=I/U B) P=IU C) N=A/t D) I=q/t 6 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Rezirfort B) Nyuton C) O.Ryomer D) J.Uatt 7 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Tok kuchi B) Elektr toki C) qisqa tutashuv D) Zaryadlar 8 / 25 Elektr zanjirida ketma-ket ulangan iste`molchilar qarshiliklari 80, 120 va 200 Om dan iborat. Umumiy kuchlanish 220 V bo`lsa, uchinchi iste`molchidagi kuchlanish tushuvini toping A) 220 V B) 110 V C) 44 V D) 180 V 9 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) hamma javoblar to'g'ri B) yunon olimi Fales Miletskiy C) grek olimi Arximed D) yunon olimi Aristotel 10 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Voltmetr B) Ampermetr C) Areometr D) kondensator 11 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Manfiy zaryad C) Musbat zaryad D) Nuqtaviy zaryad 12 / 25 Elektr doimiysining son qiymati nechaga teng? A) 3*10^-19 C B) 9,1*10^-31kg C) -3*10^-19 C D) 8,85*10^-12C^2/N*m^2 13 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 2 ta B) 0 ta C) 4 ta D) 6 ta 14 / 25 bu shartli belgi qanday nomlanadi? A) Tok manbayi B) Qo’ng’iroq C) Kalit D) O’tkazgichlarning tutashtirmasdan kesishishi 15 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Rezerfort B) Demokret C) Beruniy D) Kulon 16 / 25 Bitta elektron zaryadi nechaga teng ? A) 9,1*10^-31C B) 2,01*10^-19C C) 8,81*10^-19 D) 1,6*10^-19C 17 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektroskop B) elektrometr C) potensiyometr D) rezistor 18 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,5 A B) 0,1 A C) 0,4 A D) 6 A 19 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) U B) R C) J D) L 20 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 220 J B) 20 J C) 155 J D) 15 J 21 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) ampermetr B) elektroskop C) elektrometr D) voltmeter 22 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 3 v B) 15 V C) 12 V D) 25 V 23 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 15 C B) 12 C C) 10 C D) 24 C 24 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) Q=I^2Rt B) I=qt C) R=U/I D) R=ρl/S 25 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,5 A B) 0,2 A C) 0.4 A D) 0,1 A 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
