Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 626 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 1 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 5,4*10‾⁴ N C) 2*10‾⁸ N D) 270 N 2 / 25 Elektr sig’imining o’lchov birligi nima ? A) amper B) Kulon C) Sekund D) Farad 3 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Tok kuchi C) Zaryad D) Musbat zaryad 4 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 2 A B) 1.8 A C) 4 A D) 5 A 5 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) hamma javoblar to'g'ri B) yunon olimi Fales Miletskiy C) grek olimi Arximed D) yunon olimi Aristotel 6 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektrometr B) Elektroskop C) Dinomometr D) Barometr 7 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) kondensator C) Areometr D) Voltmetr 8 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Suvli eritma B) Turli eritma C) Ion bog’lanish D) Eletroliz 9 / 25 Natriy (Na) atomida nechta electron bor ? A) 10 ta B) 9 ta C) 11 ta D) 12 ta 10 / 25 Faradey doimiysining son qiymatini toping ? A) 7800 C/mol B) 7200 C/mol C) 8000C/mol D) 96500 C/mol 11 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 500 W B) 5,5 W C) 550 W D) 55 W 12 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Elektr toki B) Tok kuchi C) qisqa tutashuv D) Zaryadlar 13 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 35,5 mA B) 9mA C) 7 mA D) 25 mA 14 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) Q=ItU B) I=q/t C) R=U/I D) U=A/q 15 / 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 16 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 220 V C) 5V D) 1,5 V 17 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=ρl/S B) R=U/I C) I=qt D) Q=I^2Rt 18 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 6 A B) 0,4 A C) 0,5 A D) 0,1 A 19 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0,4 C) 0.017 D) 0.5 20 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 2,2 Ω B) 4,4 Ω C) 220 Ω D) 440 Ω 21 / 25 Elekt kuchlanishining ulchov birligi nima? A) Sekund B) Volt C) Amper D) Kulon 22 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Kuchlanish C) Zaryad D) Tok kuchi 23 / 25 Tok kuchining o'lchov birligi nima? A) Kulon B) Joul C) Amper D) Volt 24 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektroskop B) Elektrometr C) Ampermetr D) Voltmetr 25 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) U B) J C) R D) L 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
