Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 440 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 18 Ω B) 44.4 Ω C) 20 Ω D) 44 Ω 2 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 12 V B) 15 V C) 3 v D) 25 V 3 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) voltmeter B) elektrometr C) elektroskop D) ampermetr 4 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,1 A B) 0,2 A C) 0,5 A D) 0.4 A 5 / 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 6 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=U/I B) Q=I^2Rt C) R=ρl/S D) I=qt 7 / 25 Tok kuchining o'lchov birligi nima? A) Kulon B) Volt C) Joul D) Amper 8 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Ampermetr B) Voltmetr C) Elektrometr D) Elektroskop 9 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) elektrometr C) rezistor D) elektroskop 10 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 12 C B) 10 C C) 24 C D) 15 C 11 / 25 1Vatt.soat necha Jaulga teng ? A) 5000 J B) 5600 J C) 360 J D) 3600 J 12 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) I=q/t B) N=A/t C) P=IU D) R=I/U 13 / 25 Bug’ mashinasini kim kashf etgan ? A) Amper B) Kulon C) Jems Uatt D) Volta 14 / 25 Faradey doimiysining son qiymatini toping ? A) 8000C/mol B) 96500 C/mol C) 7200 C/mol D) 7800 C/mol 15 / 25 Natriy (Na) atomida nechta electron bor ? A) 11 ta B) 10 ta C) 12 ta D) 9 ta 16 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) O.Ryomer B) Rezirfort C) Nyuton D) J.Uatt 17 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) ν=m/µ B) N=mn∆z C) to'g'ri javob yo'q D) m=µ/N 18 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5*10‾⁵ N/C B) 5*10⁵ N/C C) 6*10⁴ N/C D) 5,1*10⁶ N/C 19 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Elektr zaryat C) Bo’linmas D) Musbat zaryad 20 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Elektroskop B) spedometr C) Barametr D) Areometr 21 / 25 bu shartli belgi qanday nomlanadi? A) Tok manbayi B) O’tkazgichlarning tutashtirmasdan kesishishi C) Qo’ng’iroq D) Kalit 22 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) to'g'ri javob yo'q B) Elektrlanmaydi C) Musbat D) Manfiy 23 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 5 A B) 2 A C) 4 A D) 1.8 A 24 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektroskop B) Barometr C) Elektrometr D) Dinomometr 25 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Tok kuchi C) Musbat zaryad D) Elektr toki 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
