Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1234 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 5 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Tok kuchining o'lchov birligi nima? A) Volt B) Amper C) Kulon D) Joul 2 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 5V B) 1,5 V C) 500 kV D) 220 V 3 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Tok kuchi C) Zaryad D) Kuchlanish 4 / 25 Elektr qashiligi formulasi qaysi javobda keltirilgan? A) R=ρl/S B) Q=I^2Rt C) I=qt D) R=U/I 5 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) U C) L D) R 6 / 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) 18 Ω D) 44 Ω 7 / 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) 180 V B) 110 V C) 220 V D) 44 V 8 / 25 Elektrlanishning necha turi mavjud ? A) 5 B) 4 C) 2 D) 3 9 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 5,1*10⁶ N/C B) 6*10⁴ N/C C) 5*10‾⁵ N/C D) 5*10⁵ N/C 10 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Kulon B) Beruniy C) Demokret D) Rezerfort 11 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Elektrlanmaydi B) to'g'ri javob yo'q C) Musbat D) Manfiy 12 / 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 13 / 25 Bitta elektron zaryadi nechaga teng ? A) 9,1*10^-31C B) 2,01*10^-19C C) 8,81*10^-19 D) 1,6*10^-19C 14 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) Areometr C) kondensator D) Voltmetr 15 / 25 Natriy (Na) atomida nechta electron bor ? A) 12 ta B) 9 ta C) 10 ta D) 11 ta 16 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) N=A/t B) P=IU C) I=q/t D) R=I/U 17 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) J=q/t B) R=UI C) A=UIT D) Q=I^2RT 18 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) N=mn∆z B) to'g'ri javob yo'q C) ν=m/µ D) m=µ/N 19 / 25 Elektr toki bajargan ishining asosiy birligi nima? A) Volt B) amper C) Paskal D) Vatt sekund 20 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) J.Uatt B) Rezirfort C) O.Ryomer D) Nyuton 21 / 25 Bug’ mashinasini kim kashf etgan ? A) Volta B) Kulon C) Jems Uatt D) Amper 22 / 25 1Vatt.soat necha Jaulga teng ? A) 3600 J B) 5000 J C) 5600 J D) 360 J 23 / 25 Necha volt kuchlanishli elektr tarmoq odam organizmi uchun xavflihisoblanadi? A) 300 Vdan yuqori B) 30 V dan yuqori C) 220 V dan yuqori D) 36 V dan yuqori 24 / 25 Faradey doimiysining son qiymatini toping ? A) 7200 C/mol B) 8000C/mol C) 96500 C/mol D) 7800 C/mol 25 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Eletroliz B) Suvli eritma C) Turli eritma D) Ion bog’lanish 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
