Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1233 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 5 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Dinomometr B) Elektroskop C) Elektrometr D) Barometr 2 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Elementar zaryad B) Musbat zaryad C) Nuqtaviy zaryad D) Manfiy zaryad 3 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 2 C) 3 D) 4 4 / 25 Elektr zaryadining o’lchov birligi nima ? A) kulon B) volt C) Joul D) Amper 5 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Beruniy B) Rezerfort C) Demokret D) Kulon 6 / 25 Elektr zanjirida ketma-ket ulangan iste`molchilar qarshiliklari 80, 120 va 200 Om dan iborat. Umumiy kuchlanish 220 V bo`lsa, uchinchi iste`molchidagi kuchlanish tushuvini toping A) 110 V B) 220 V C) 44 V D) 180 V 7 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Manfiy B) Musbat C) Elektrlanmaydi D) to'g'ri javob yo'q 8 / 25 Elektr doimiysining son qiymati nechaga teng? A) 8,85*10^-12C^2/N*m^2 B) -3*10^-19 C C) 3*10^-19 C D) 9,1*10^-31kg 9 / 25 Bitta elektron massasi nechaga teng ? A) 8,81*10^-19kg B) 1,6*10^-19kg C) 3,36*10^-32kg D) 9,1*10^-31kg 10 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 2 marta kamayadi B) 2 marta ortadi C) o`zgarmaydi D) 4 marta kamaydi 11 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Voltmetr B) kondensator C) Ampermetr D) Areometr 12 / 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) 5,1*10⁶ N/C C) 5*10⁵ N/C D) 6*10⁴ N/C 13 / 25 Bug’ mashinasini kim kashf etgan ? A) Volta B) Amper C) Jems Uatt D) Kulon 14 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) I=q/t B) P=IU C) R=I/U D) N=A/t 15 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) J.Uatt B) Nyuton C) Rezirfort D) O.Ryomer 16 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Ion bog’lanish B) Eletroliz C) Turli eritma D) Suvli eritma 17 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 220 V dan yuqori B) 30 V dan yuqori C) 36 V dan yuqori D) 300 Vdan yuqori 18 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Kovalent bog’lanish B) Qutbli bog’lanish C) Ionli bog’lanish D) Elektrolitlar 19 / 25 Faradey doimiysining son qiymatini toping ? A) 7800 C/mol B) 8000C/mol C) 96500 C/mol D) 7200 C/mol 20 / 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 21 / 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) 0,8 A C) 4 A D) 9 A 22 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 5V B) 220 V C) 1,5 V D) 500 kV 23 / 25 Elektr zanjiridagi lampochkadan 5 minutda 30 C zaryad o’tgani ma’lum. Zanjirdagi ampermetr lampochkadan qancha tok o’tayotganini ko’rsating? A) 6 A B) 0,4 A C) 0,5 A D) 0,1 A 24 / 25 Rezistor so’zining manosi nima ? A) Kuchlanish B) Qarshilik C) Tok kuchi D) Zaryad 25 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) Q=ItU B) R=U/I C) I=q/t D) U=A/q 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
