Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1286 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 9 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 7 mA B) 35,5 mA C) 9mA D) 25 mA 2 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) A=UIT B) J=q/t C) R=UI D) Q=I^2RT 3 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Volta B) Joul C) Ersted D) Amper 4 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) m=µ/N B) N=mn∆z C) ν=m/µ D) to'g'ri javob yo'q 5 / 25 Faradey doimiysining son qiymatini toping ? A) 8000C/mol B) 7800 C/mol C) 7200 C/mol D) 96500 C/mol 6 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Eletroliz B) Ion bog’lanish C) Turli eritma D) Suvli eritma 7 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Paskal B) Vatt sekund C) Volt D) amper 8 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Rezirfort B) Nyuton C) O.Ryomer D) J.Uatt 9 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Zaryadlar B) Tok kuchi C) Elektr toki D) qisqa tutashuv 10 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0,4 C) 0.017 D) 0.5 11 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) ampermetr B) voltmeter C) elektroskop D) elektrometr 12 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) R=U/I B) I=q/t C) Q=ItU D) U=A/q 13 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) F=kq/r^2 B) U=A|q C) I=q/t D) E=U/d 14 / 25 Rezistor so’zining manosi nima ? A) Zaryad B) Kuchlanish C) Tok kuchi D) Qarshilik 15 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) U B) R C) L D) J 16 / 25 Tok kuchining o'lchov birligi nima? A) Joul B) Kulon C) Volt D) Amper 17 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 15 C B) 12 C C) 24 C D) 10 C 18 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Voltmetr B) Elektrometr C) Ampermetr D) Elektroskop 19 / 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) 0.4 Ω C) 0.5 Ω D) 1 Ω 20 / 25 Elektrlanishning necha turi mavjud ? A) 4 B) 2 C) 5 D) 3 21 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10⁵ N/C B) 5,1*10⁶ N/C C) 6*10⁴ N/C D) 5*10‾⁵ N/C 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) 2*10‾⁸ N B) 5,4*10‾⁴ N C) 5*10‾⁸ N D) 270 N 23 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 4 marta kamaydi B) 2 marta kamayadi C) 2 marta ortadi D) o`zgarmaydi 24 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Nuqtaviy zaryad C) Manfiy zaryad D) Musbat zaryad 25 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 8,81*10^-19kg C) 3,36*10^-32kg D) 9,1*10^-31kg 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
