Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1428 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 6 ta B) 0 ta C) 2 ta D) 4 ta 2 / 25 bu shartli belgi qanday nomlanadi? A) Kalit B) Qo’ng’iroq C) O’tkazgichlarning tutashtirmasdan kesishishi D) Tok manbayi 3 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Tok kuchi C) Musbat zaryad D) Elektr toki 4 / 25 Bitta elektron zaryadi nechaga teng ? A) 1,6*10^-19C B) 9,1*10^-31C C) 2,01*10^-19C D) 8,81*10^-19 5 / 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) 5,4*10‾⁴ N B) 5*10‾⁸ N C) 270 N D) 2*10‾⁸ N 6 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) kondensator C) Areometr D) Voltmetr 7 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 6*10⁴ N/C B) 5*10‾⁵ N/C C) 5*10⁵ N/C D) 5,1*10⁶ N/C 8 / 25 Elektr sig’imining o’lchov birligi nima ? A) Kulon B) Sekund C) amper D) Farad 9 / 25 Atom so’zining ma’nosi nima ? A) Bo’linmas B) Zaryad C) Elektr zaryat D) Musbat zaryad 10 / 25 Elektr zaryadining o’lchov birligi nima ? A) volt B) Amper C) kulon D) Joul 11 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) Q=I^2RT B) R=UI C) J=q/t D) A=UIT 12 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) P=IU B) I=q/t C) N=A/t D) R=I/U 13 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Ohangrabo-temirni tortuvchi B) Suniy magnitlar C) Doimiy magnitlar D) Tabiy magnitlar 14 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 25 mA B) 7 mA C) 9mA D) 35,5 mA 15 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Ion bog’lanish B) Gaz razryadi C) Elektroliz D) Uchqun 16 / 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 17 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektrometr B) Ampermetr C) Elektroskop D) Voltmetr 18 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 20 Ω B) 44 Ω C) 18 Ω D) 44.4 Ω 19 / 25 Tok kuchining o'lchov birligi nima? A) Volt B) Amper C) Kulon D) Joul 20 / 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) 9 A C) 0,8 A D) 4 A 21 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) I=q/t B) R=U/I C) Q=ItU D) U=A/q 22 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 500 kV B) 5V C) 220 V D) 1,5 V 23 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) L C) U D) J 24 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektrometr B) rezistor C) elektroskop D) potensiyometr 25 / 25 Rezistor so’zining manosi nima ? A) Kuchlanish B) Qarshilik C) Zaryad D) Tok kuchi 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
