Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1568 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 5,5 W B) 500 W C) 550 W D) 55 W 2 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) I=q/t B) N=A/t C) P=IU D) R=I/U 3 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Jems Uatt C) Volta D) Amper 4 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Suvli eritma B) Eletroliz C) Turli eritma D) Ion bog’lanish 5 / 25 Natriy (Na) atomida nechta electron bor ? A) 12 ta B) 11 ta C) 9 ta D) 10 ta 6 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 5600 J C) 3600 J D) 5000 J 7 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) ν=m/µ B) N=mn∆z C) m=µ/N D) to'g'ri javob yo'q 8 / 25 Ionlar orasida Kulon kuchi tufayli vijudga keladigan kimyoviy bog’lanish……deb ataladi? A) Ionli bog’lanish B) Qutbli bog’lanish C) Elektrolitlar D) Kovalent bog’lanish 9 / 25 Elektr tokining bajargan ishini formulasini ko’rsating toping ? A) J=q/t B) R=UI C) A=UIT D) Q=I^2RT 10 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Ion bog’lanish B) Gaz razryadi C) Uchqun D) Elektroliz 11 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) to'g'ri javob yo'q B) Musbat C) Elektrlanmaydi D) Manfiy 12 / 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 ortadi D) 2 marta kamayadi 13 / 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 14 / 25 Jismlarning elektrlanganlikdarajasini aniqlovchisbob qanday nomlanadi ? A) Dinomometr B) Elektrometr C) Elektroskop D) Barometr 15 / 25 Atom so’zining ma’nosi nima ? A) Musbat zaryad B) Zaryad C) Elektr zaryat D) Bo’linmas 16 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Demokret B) Rezerfort C) Beruniy D) Kulon 17 / 25 Qarshiliklari 200 Ω va 300 Ω bo`lgan ikkita elektr lampa parallel ulanib, 240 V tarmoqqa kiritilgan. Umumiy tok kattaligini toping. A) 4 A B) 5 A C) 1.8 A D) 2 A 18 / 25 Elektr zaryadining o’lchov birligi nima ? A) volt B) Amper C) kulon D) Joul 19 / 25 Qahrabo so’zining ma’nosi nima ? A) Qattiq rezina B) Manfiy C) Elektrlanuvchi D) Somon tortuvchi 20 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0.4 A B) 0,1 A C) 0,2 A D) 0,5 A 21 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) I=q/t B) U=A/q C) Q=ItU D) R=U/I 22 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 44 Ω B) 44.4 Ω C) 20 Ω D) 18 Ω 23 / 25 Rezistor so’zining manosi nima ? A) Kuchlanish B) Tok kuchi C) Qarshilik D) Zaryad 24 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 220 Ω B) 440 Ω C) 4,4 Ω D) 2,2 Ω 25 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) R B) J C) L D) U 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
