Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 345 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Atom so’zining ma’nosi nima ? A) Bo’linmas B) Musbat zaryad C) Elektr zaryat D) Zaryad 2 / 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) 1 Ω C) 0.4 Ω D) 0.5 Ω 3 / 25 Elektr sig’imining o’lchov birligi nima ? A) amper B) Kulon C) Sekund D) Farad 4 / 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) 270 N B) 5*10‾⁸ N C) 2*10‾⁸ N D) 5,4*10‾⁴ N 5 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Elektr toki B) Tok kuchi C) Zaryad D) Musbat zaryad 6 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Elektroskop B) Barametr C) spedometr D) Areometr 7 / 25 Elektr doimiysining son qiymati nechaga teng? A) -3*10^-19 C B) 9,1*10^-31kg C) 3*10^-19 C D) 8,85*10^-12C^2/N*m^2 8 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) Q=ItU B) U=A/q C) I=q/t D) R=U/I 9 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektrometr B) Elektroskop C) Ampermetr D) Voltmetr 10 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) F=kq/r^2 B) E=U/d C) U=A|q D) I=q/t 11 / 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) 0,5 A C) 0,1 A D) 0,4 A 12 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) J C) L D) U 13 / 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) 10 C D) 24 C 14 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0,4 C) 0.5 D) 0.017 15 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 20 J B) 155 J C) 220 J D) 15 J 16 / 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) 2 A B) 4 A C) 0,8 A D) 9 A 17 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) qisqa tutashuv B) Elektr toki C) Tok kuchi D) Zaryadlar 18 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Amper B) Volta C) Ersted D) Joul 19 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 780 J B) 50 J C) 60 J D) 54 J 20 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonaplastina B) eletrlolez C) Ion bog’lanish D) Galvonastegiya 21 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) P=IU B) N=A/t C) R=I/U D) I=q/t 22 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Kovalent bog’lanish B) Ionli bog’lanish C) Qutbli bog’lanish D) Elektrolitlar 23 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) J=q/t B) R=UI C) A=UIT D) Q=I^2RT 24 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) Nyuton B) J.Uatt C) Rezirfort D) O.Ryomer 25 / 25 1Vatt.soat necha Jaulga teng ? A) 5000 J B) 360 J C) 3600 J D) 5600 J 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
