Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 372 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr sig’imining o’lchov birligi nima ? A) amper B) Sekund C) Kulon D) Farad 2 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 8,81*10^-19kg C) 3,36*10^-32kg D) 9,1*10^-31kg 3 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Tok kuchi C) Elektr toki D) Musbat zaryad 4 / 25 Elektr zaryadining o’lchov birligi nima ? A) Amper B) Joul C) kulon D) volt 5 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Elektrlanuvchi C) Somon tortuvchi D) Manfiy 6 / 25 Elektr doimiysining son qiymati nechaga teng? A) -3*10^-19 C B) 8,85*10^-12C^2/N*m^2 C) 9,1*10^-31kg D) 3*10^-19 C 7 / 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) 5*10‾⁸ N B) 270 N C) 2*10‾⁸ N D) 5,4*10‾⁴ N 8 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektroskop B) Barometr C) Elektrometr D) Dinomometr 9 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) Areometr C) Voltmetr D) kondensator 10 / 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) 180 V B) 44 V C) 110 V D) 220 V 11 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Nuqtaviy zaryad B) Elementar zaryad C) Musbat zaryad D) Manfiy zaryad 12 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 4 marta kamaydi B) 2 marta kamayadi C) o`zgarmaydi D) 2 marta ortadi 13 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Beruniy B) Demokret C) Kulon D) Rezerfort 14 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) to'g'ri javob yo'q B) ν=m/µ C) m=µ/N D) N=mn∆z 15 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Elektr toki B) Zaryadlar C) Tok kuchi D) qisqa tutashuv 16 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) P=IU B) R=I/U C) I=q/t D) N=A/t 17 / 25 Bug’ mashinasini kim kashf etgan ? A) Jems Uatt B) Amper C) Kulon D) Volta 18 / 25 Uzunligi 1 m, ko’ndalang kesimining yuzi 0,4 mm2 bo’lgan nikelin simning uchlaridagi kuchlanish 2 V gat eng. Shu elektr zanjir orqali o’tayotgan tok kuchini aniqlang? A) 0,8 A B) 9 A C) 4 A D) 2 A 19 / 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) 44.4 Ω C) 18 Ω D) 20 Ω 20 / 25 Tok kuchining o'lchov birligi nima? A) Amper B) Volt C) Kulon D) Joul 21 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 20 J B) 155 J C) 220 J D) 15 J 22 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) elektroskop C) rezistor D) elektrometr 23 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) I=qt B) R=ρl/S C) Q=I^2Rt D) R=U/I 24 / 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 25 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektroskop B) Voltmetr C) Elektrometr D) Ampermetr 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
