Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 604 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 3 1 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 1,1 kW B) 100 W C) 220 W D) 110W 2 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Suvli eritma B) Ion bog’lanish C) Turli eritma D) Eletroliz 3 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 300 Vdan yuqori B) 220 V dan yuqori C) 30 V dan yuqori D) 36 V dan yuqori 4 / 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 5 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) qisqa tutashuv B) Tok kuchi C) Zaryadlar D) Elektr toki 6 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Musbat zaryad C) Elektr zaryat D) Bo’linmas 7 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 0 ta B) 6 ta C) 4 ta D) 2 ta 8 / 25 Elektr sig’imining o’lchov birligi nima ? A) Farad B) amper C) Sekund D) Kulon 9 / 25 Bitta elektron zaryadi nechaga teng ? A) 1,6*10^-19C B) 2,01*10^-19C C) 8,81*10^-19 D) 9,1*10^-31C 10 / 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 11 / 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) 1 Ω B) 0.2 Ω C) 0.5 Ω D) 0.4 Ω 12 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Rezerfort C) Beruniy D) Demokret 13 / 25 Bitta elektron massasi nechaga teng ? A) 9,1*10^-31kg B) 8,81*10^-19kg C) 3,36*10^-32kg D) 1,6*10^-19kg 14 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Dinomometr B) Elektroskop C) Elektrometr D) Barometr 15 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta ortadi B) 2 marta kamayadi C) o`zgarmaydi D) 4 marta kamaydi 16 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) grek olimi Arximed B) yunon olimi Aristotel C) yunon olimi Fales Miletskiy D) hamma javoblar to'g'ri 17 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 44.4 Ω B) 20 Ω C) 44 Ω D) 18 Ω 18 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 4,4 Ω B) 220 Ω C) 2,2 Ω D) 440 Ω 19 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 25 V B) 3 v C) 12 V D) 15 V 20 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 1,5 V B) 500 kV C) 220 V D) 5V 21 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) U=A|q B) E=U/d C) I=q/t D) F=kq/r^2 22 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) U C) L D) J 23 / 25 Rezistor so’zining manosi nima ? A) Zaryad B) Tok kuchi C) Qarshilik D) Kuchlanish 24 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 0,5 A B) 0,1 A C) 0,4 A D) 6 A 25 / 25 Tok kuchining o'lchov birligi nima? A) Joul B) Amper C) Volt 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 Author: InfoMaster Foydali bo'lsa mamnunmiz
