Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 406 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 3 v B) 15 V C) 12 V D) 25 V 2 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 220 V C) 1,5 V D) 5V 3 / 25 Temir moddasining (200C da) solishtirma qashiligi nechaga teng? A) 0,098 B) 0.017 C) 0.5 D) 0,4 4 / 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) 44 Ω D) 20 Ω 5 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 440 Ω B) 2,2 Ω C) 220 Ω D) 4,4 Ω 6 / 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) 220 J C) 155 J D) 15 J 7 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektroskop B) Voltmetr C) Ampermetr D) Elektrometr 8 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) L C) U D) R 9 / 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) 0.5 Ω B) 1 Ω C) 0.2 Ω D) 0.4 Ω 10 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Musbat zaryad B) Elementar zaryad C) Nuqtaviy zaryad D) Manfiy zaryad 11 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 4 ta B) 2 ta C) 6 ta D) 0 ta 12 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Barametr B) Areometr C) spedometr D) Elektroskop 13 / 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) 270 N D) 5*10‾⁸ N 14 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Elektrometr B) Dinomometr C) Elektroskop D) Barometr 15 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) hamma javoblar to'g'ri B) yunon olimi Aristotel C) grek olimi Arximed D) yunon olimi Fales Miletskiy 16 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta kamayadi B) 4 marta kamaydi C) o`zgarmaydi D) 2 marta ortadi 17 / 25 bu shartli belgi qanday nomlanadi? A) Tok manbayi B) Qo’ng’iroq C) O’tkazgichlarning tutashtirmasdan kesishishi D) Kalit 18 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) Amper C) volt D) kulon 19 / 25 Bitta elektron zaryadi nechaga teng ? A) 9,1*10^-31C B) 1,6*10^-19C C) 2,01*10^-19C D) 8,81*10^-19 20 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Eletroliz B) Turli eritma C) Suvli eritma D) Ion bog’lanish 21 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 60 J B) 780 J C) 50 J D) 54 J 22 / 25 Bug’ mashinasini kim kashf etgan ? A) Volta B) Kulon C) Jems Uatt D) Amper 23 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Ion bog’lanish B) Uchqun C) Elektroliz D) Gaz razryadi 24 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) J.Uatt B) Nyuton C) O.Ryomer D) Rezirfort 25 / 25 Tok o’tayotgan o’tkazgich atrofida magnit maydon bor ekanligini ko’rsatgan tajriba qaysi olim nomi bilanbog’liq ? A) Joul B) Amper C) Ersted D) Volta 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
