Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 532 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 2 A C) 9 A D) 4 A 2 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,5 A B) 0.4 A C) 0,2 A D) 0,1 A 3 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 15 C B) 10 C C) 24 C D) 12 C 4 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) I=q/t B) E=U/d C) F=kq/r^2 D) U=A|q 5 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) elektrometr C) elektroskop D) rezistor 6 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 220 Ω B) 440 Ω C) 4,4 Ω D) 2,2 Ω 7 / 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) 6 A C) 0,5 A D) 0,4 A 8 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Voltmetr B) Ampermetr C) Elektroskop D) Elektrometr 9 / 25 Faradey doimiysining son qiymatini toping ? A) 96500 C/mol B) 8000C/mol C) 7800 C/mol D) 7200 C/mol 10 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Rezirfort B) Nyuton C) O.Ryomer D) J.Uatt 11 / 25 1Vatt.soat necha Jaulga teng ? A) 3600 J B) 5600 J C) 360 J D) 5000 J 12 / 25 Bug’ mashinasini kim kashf etgan ? A) Jems Uatt B) Volta C) Kulon D) Amper 13 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Uchqun B) Elektroliz C) Gaz razryadi D) Ion bog’lanish 14 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Ohangrabo-temirni tortuvchi B) Tabiy magnitlar C) Suniy magnitlar D) Doimiy magnitlar 15 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Turli eritma B) Suvli eritma C) Eletroliz D) Ion bog’lanish 16 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 550 W B) 5,5 W C) 500 W D) 55 W 17 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta kamayadi B) 2 marta ortadi C) 4 marta kamaydi D) o`zgarmaydi 18 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryad oqimi B) Tok manbayi C) To’plovchi D) Zaryadlovchi 19 / 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) 270 N C) 2*10‾⁸ N D) 5*10‾⁸ N 20 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Musbat zaryad C) Elektr zaryat D) Bo’linmas 21 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Elektrlanmaydi B) Manfiy C) to'g'ri javob yo'q D) Musbat 22 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) hamma javoblar to'g'ri B) yunon olimi Fales Miletskiy C) yunon olimi Aristotel D) grek olimi Arximed 23 / 25 Elektr zaryadining o’lchov birligi nima ? A) Amper B) volt C) Joul D) kulon 24 / 25 Elektr sig’imining o’lchov birligi nima ? A) Sekund B) amper C) Farad D) Kulon 25 / 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) 220 V C) 110 V D) 44 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 Foydali bo'lsa mamnunmiz
