8-sinf Fizika 2-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 2-chorak ga fikr bildirilmagan. 8 8-sinf Fizika 2-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 5 A C) 2 A D) 4 A 2 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 1,6*10^-19kg C) 8,81*10^-19kg D) 3,36*10^-32kg 3 / 25 Qarshiligi 10 Ω bo`lgan mis o`tkazgichni 5 ta teng bo`lakka bo`lib, bo`laklar o`zaro parallel ulandi. Umumiy qarshilikni toping. A) 0.2 Ω B) 1 Ω C) 0.4 Ω D) 0.5 Ω 4 / 25 Elektr sig’imining o’lchov birligi nima ? A) Farad B) Kulon C) amper D) Sekund 5 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) o`zgarmaydi B) 2 marta ortadi C) 2 marta kamayadi D) 4 marta kamaydi 6 / 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) 44 V B) 220 V C) 110 V D) 180 V 7 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) grek olimi Arximed B) hamma javoblar to'g'ri C) yunon olimi Aristotel D) yunon olimi Fales Miletskiy 8 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Elektrlanmaydi B) to'g'ri javob yo'q C) Musbat D) Manfiy 9 / 25 Bitta elektron zaryadi nechaga teng ? A) 8,81*10^-19 B) 1,6*10^-19C C) 2,01*10^-19C D) 9,1*10^-31C 10 / 25 Akkumulator so’zining ma’nosi nima ? A) Tok manbayi B) Zaryad oqimi C) Zaryadlovchi D) To’plovchi 11 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Manfiy zaryad C) Nuqtaviy zaryad D) Musbat zaryad 12 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10‾⁵ N/C B) 5*10⁵ N/C C) 6*10⁴ N/C D) 5,1*10⁶ N/C 13 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) E=U/d B) I=q/t C) F=kq/r^2 D) U=A|q 14 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) R=U/I B) U=A/q C) Q=ItU D) I=q/t 15 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 44.4 Ω B) 18 Ω C) 20 Ω D) 44 Ω 16 / 25 Elekt kuchlanishining ulchov birligi nima? A) Kulon B) Volt C) Amper D) Sekund 17 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) L C) R D) U 18 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 15 J B) 20 J C) 220 J D) 155 J 19 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Ampermetr B) Voltmetr C) Elektroskop D) Elektrometr 20 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 5V C) 220 V D) 1,5 V 21 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,5 A B) 0.4 A C) 0,1 A D) 0,2 A 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) 12 V B) 25 V C) 3 v D) 15 V 23 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektroskop B) elektrometr C) rezistor D) potensiyometr 24 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0.5 B) 0,098 C) 0.017 D) 0,4 25 / 25 Tok kuchining o'lchov birligi nima? A) Volt B) Amper C) Kulon D) Joul 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