Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 350 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) L B) U C) R D) J 2 / 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) 44 Ω D) 20 Ω 3 / 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) 20 J C) 15 J D) 220 J 4 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) rezistor C) elektrometr D) elektroskop 5 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektroskop B) Ampermetr C) Elektrometr D) Voltmetr 6 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 2,2 Ω B) 220 Ω C) 4,4 Ω D) 440 Ω 7 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,1 A B) 0.4 A C) 0,2 A D) 0,5 A 8 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Bo’linmas C) Elektr zaryat D) Musbat zaryad 9 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 4 ta B) 0 ta C) 6 ta D) 2 ta 10 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryad oqimi B) To’plovchi C) Zaryadlovchi D) Tok manbayi 11 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 9,1*10^-31kg C) 3,36*10^-32kg D) 8,81*10^-19kg 12 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 3 C) 4 D) 2 13 / 25 Elektr sig’imining o’lchov birligi nima ? A) Kulon B) amper C) Sekund D) Farad 14 / 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) 44 V C) 180 V D) 110 V 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) 5*10‾⁸ N B) 2*10‾⁸ N C) 270 N D) 5,4*10‾⁴ N 16 / 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) 0.5 Ω B) 0.4 Ω C) 1 Ω D) 0.2 Ω 17 / 25 bu shartli belgi qanday nomlanadi? A) Qo’ng’iroq B) Tok manbayi C) O’tkazgichlarning tutashtirmasdan kesishishi D) Kalit 18 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonastegiya B) Ion bog’lanish C) eletrlolez D) Galvonaplastina 19 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Volta B) Ersted C) Joul D) Amper 20 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 500 W B) 550 W C) 55 W D) 5,5 W 21 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Paskal B) Volt C) amper D) Vatt sekund 22 / 25 Bug’ mashinasini kim kashf etgan ? A) Volta B) Jems Uatt C) Kulon D) Amper 23 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 780 J B) 60 J C) 50 J D) 54 J 24 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Turli eritma B) Ion bog’lanish C) Suvli eritma D) Eletroliz 25 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 300 Vdan yuqori B) 220 V dan yuqori C) 30 V dan yuqori D) 36 V dan yuqori 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
