8-sinf Fizika 2-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 2-chorak ga fikr bildirilmagan. 0 8-sinf Fizika 2-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) spedometr B) Elektroskop C) Areometr D) Barametr 2 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Manfiy C) Elektrlanuvchi D) Somon tortuvchi 3 / 25 bu shartli belgi qanday nomlanadi? A) Qo’ng’iroq B) Kalit C) O’tkazgichlarning tutashtirmasdan kesishishi D) Tok manbayi 4 / 25 Elektrlanishning necha turi mavjud ? A) 3 B) 5 C) 4 D) 2 5 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Rezerfort C) Demokret D) Beruniy 6 / 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 7 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 1,6*10^-19kg C) 3,36*10^-32kg D) 8,81*10^-19kg 8 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Musbat zaryad B) Zaryad C) Elektr toki D) Tok kuchi 9 / 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) 110 V B) 44 V C) 220 V D) 180 V 10 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 1.8 A B) 4 A C) 2 A D) 5 A 11 / 25 Akkumulator so’zining ma’nosi nima ? A) To’plovchi B) Zaryadlovchi C) Tok manbayi D) Zaryad oqimi 12 / 25 Atom so’zining ma’nosi nima ? A) Elektr zaryat B) Zaryad C) Bo’linmas D) Musbat zaryad 13 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Barometr B) Elektrometr C) Dinomometr D) Elektroskop 14 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Musbat zaryad B) Elementar zaryad C) Manfiy zaryad D) Nuqtaviy zaryad 15 / 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) 5*10‾⁸ N C) 5,4*10‾⁴ N D) 2*10‾⁸ N 16 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5,1*10⁶ N/C B) 5*10⁵ N/C C) 5*10‾⁵ N/C D) 6*10⁴ N/C 17 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=ρl/S B) I=qt C) Q=I^2Rt D) R=U/I 18 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,1 A B) 0,4 A C) 0,5 A D) 6 A 19 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Zaryad C) Kuchlanish D) Tok kuchi 20 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) Q=ItU B) R=U/I C) I=q/t D) U=A/q 21 / 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 22 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) U=A|q B) F=kq/r^2 C) E=U/d D) I=q/t 23 / 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) 440 Ω D) 220 Ω 24 / 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) 220 J C) 20 J D) 15 J 25 / 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) 3 v C) 25 V D) 12 V 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