Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 268 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 4,4 Ω D) 220 Ω 2 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 1,5 V B) 500 kV C) 5V D) 220 V 3 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) elektroskop B) elektrometr C) potensiyometr D) rezistor 4 / 25 Elekt kuchlanishining ulchov birligi nima? A) Volt B) Sekund C) Amper D) Kulon 5 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) F=kq/r^2 B) I=q/t C) E=U/d D) U=A|q 6 / 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) 24 C D) 12 C 7 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Tok kuchi B) Elektr toki C) Zaryadlar D) qisqa tutashuv 8 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 100 W B) 220 W C) 110W D) 1,1 kW 9 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 36 V dan yuqori B) 300 Vdan yuqori C) 30 V dan yuqori D) 220 V dan yuqori 10 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Volta C) Amper D) Jems Uatt 11 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 5600 J C) 3600 J D) 5000 J 12 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Qutbli bog’lanish B) Kovalent bog’lanish C) Ionli bog’lanish D) Elektrolitlar 13 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) N=mn∆z B) ν=m/µ C) to'g'ri javob yo'q D) m=µ/N 14 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Musbat zaryad B) Manfiy zaryad C) Elementar zaryad D) Nuqtaviy zaryad 15 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Areometr B) kondensator C) Ampermetr D) Voltmetr 16 / 25 Elektrlanishning necha turi mavjud ? A) 3 B) 2 C) 5 D) 4 17 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Manfiy B) Musbat C) Elektrlanmaydi D) to'g'ri javob yo'q 18 / 25 Elektr sig’imining o’lchov birligi nima ? A) Farad B) Sekund C) Kulon D) amper 19 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Manfiy C) Elektrlanuvchi D) Somon tortuvchi 20 / 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) 1.8 A C) 4 A D) 2 A 21 / 25 Bitta elektron zaryadi nechaga teng ? A) 8,81*10^-19 B) 2,01*10^-19C C) 9,1*10^-31C D) 1,6*10^-19C 22 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) o`zgarmaydi B) 4 marta kamaydi C) 2 marta kamayadi D) 2 marta ortadi 23 / 25 Akkumulator so’zining ma’nosi nima ? A) Tok manbayi B) To’plovchi C) Zaryadlovchi D) Zaryad oqimi 24 / 25 Elektr doimiysining son qiymati nechaga teng? A) 3*10^-19 C B) 8,85*10^-12C^2/N*m^2 C) 9,1*10^-31kg D) -3*10^-19 C 25 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Rezerfort C) Beruniy D) Kulon 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
