8-sinf Fizika 3-chorak Posted on May 5, 2021May 5, 2021 By InfoMaster 8-sinf Fizika 3-chorak ga fikr bildirilmagan. 0 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) 35,5 mA B) 25 mA C) 7 mA D) 9mA 2 / 25 Natriy (Na) atomida nechta electron bor ? A) 12 ta B) 10 ta C) 11 ta D) 9 ta 3 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 220 V dan yuqori B) 300 Vdan yuqori C) 30 V dan yuqori D) 36 V dan yuqori 4 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonaplastina B) eletrlolez C) Galvonastegiya D) Ion bog’lanish 5 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 220 V B) 500 kV C) 5V D) 1,5 V 6 / 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) 44.4 Ω C) 44 Ω D) 18 Ω 7 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=ρl/S B) I=qt C) R=U/I D) Q=I^2Rt 8 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,4 A B) 0,1 A C) 6 A D) 0,5 A 9 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) U C) R D) L 10 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) rezistor B) elektrometr C) potensiyometr D) elektroskop 11 / 25 Tok kuchining o'lchov birligi nima? A) Amper B) Joul C) Volt D) Kulon 12 / 25 Tok kuchini o’lchaydigan asbob qanday nomlanadi ? A) Elektroskop B) Voltmetr C) Ampermetr D) Elektrometr 13 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 10 C B) 15 C C) 12 C D) 24 C 14 / 25 Elekt kuchlanishining ulchov birligi nima? A) Sekund B) Volt C) Amper D) Kulon 15 / 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) 4 A D) 0,8 A 16 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Manfiy C) Elektrlanuvchi D) Somon tortuvchi 17 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Rezerfort B) Kulon C) Demokret D) Beruniy 18 / 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*10‾⁸ N C) 5,4*10‾⁴ N D) 270 N 19 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) To’plovchi C) Zaryad oqimi D) Tok manbayi 20 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 8,81*10^-19kg C) 1,6*10^-19kg D) 3,36*10^-32kg 21 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Nuqtaviy zaryad C) Musbat zaryad D) Elementar zaryad 22 / 25 Atom so’zining ma’nosi nima ? A) Bo’linmas B) Zaryad C) Elektr zaryat D) Musbat zaryad 23 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Manfiy B) to'g'ri javob yo'q C) Musbat D) Elektrlanmaydi 24 / 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) 2 marta ortadi D) o`zgarmaydi 25 / 25 Elektr doimiysining son qiymati nechaga teng? A) 8,85*10^-12C^2/N*m^2 B) 9,1*10^-31kg C) 3*10^-19 C D) -3*10^-19 C 0% Testni qayta ishga tushiring Baholash mezoni86%-100% 5 baho71%-85% 4 baho56%-70% 3 baho55% va kamiga 2 baho Fikr-mulohaza yuboring Author: InfoMaster 1Yoqdi0Yoqmadi100% LikesVS0% Dislikes Fizika
