8-sinf Fizika 2-chorak May 5, 2021May 5, 2021 da chop etilgan InfoMaster tomonidan 8-sinf Fizika 2-chorak ga fikr bildirilmagan. 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 2-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 6*10⁴ N/C C) 5,1*10⁶ N/C D) 5*10⁵ N/C 2 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektrometr B) rezistor C) potensiyometr D) elektroskop 3 / 25 Tok kuchining o'lchov birligi nima? A) Kulon B) Joul C) Amper D) Volt 4 / 25 bu shartli belgi qanday nomlanadi? A) Tok manbayi B) Qo’ng’iroq C) O’tkazgichlarning tutashtirmasdan kesishishi D) Kalit 5 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 10 C B) 12 C C) 15 C D) 24 C 6 / 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 7 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Elektroskop B) Areometr C) spedometr D) Barametr 8 / 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) 0.4 Ω B) 1 Ω C) 0.2 Ω D) 0.5 Ω 9 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 1,5 V C) 5V D) 220 V 10 / 25 Elektrlanishning necha turi mavjud ? A) 3 B) 5 C) 2 D) 4 11 / 25 Elektr doimiysining son qiymati nechaga teng? A) 9,1*10^-31kg B) 8,85*10^-12C^2/N*m^2 C) 3*10^-19 C D) -3*10^-19 C 12 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) J C) L D) U 13 / 25 Qahrabo so’zining ma’nosi nima ? A) Elektrlanuvchi B) Somon tortuvchi C) Manfiy D) Qattiq rezina 14 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Rezerfort C) Beruniy D) Demokret 15 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 18 Ω B) 44 Ω C) 44.4 Ω D) 20 Ω 16 / 25 Bitta elektron zaryadi nechaga teng ? A) 8,81*10^-19 B) 9,1*10^-31C C) 1,6*10^-19C D) 2,01*10^-19C 17 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Elektr toki C) Musbat zaryad D) Tok kuchi 18 / 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) 180 V C) 44 V D) 220 V 19 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Manfiy zaryad C) Nuqtaviy zaryad D) Musbat zaryad 20 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) o`zgarmaydi B) 4 marta kamaydi C) 2 marta kamayadi D) 2 marta ortadi 21 / 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) 220 J C) 155 J D) 20 J 22 / 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) 5,4*10‾⁴ N B) 5*10‾⁸ N C) 2*10‾⁸ N D) 270 N 23 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0.017 C) 0.5 D) 0,4 24 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) U=A|q B) E=U/d C) F=kq/r^2 D) I=q/t 25 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) I=q/t C) Q=ItU D) R=U/I 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
