Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1456 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 0 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Elektr sig’imining o’lchov birligi nima ? A) Farad B) Sekund C) Kulon D) amper 2 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 4 ta B) 6 ta C) 0 ta D) 2 ta 3 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Nuqtaviy zaryad B) Manfiy zaryad C) Musbat zaryad D) Elementar zaryad 4 / 25 Qahrabo so’zining ma’nosi nima ? A) Somon tortuvchi B) Elektrlanuvchi C) Manfiy D) Qattiq rezina 5 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Musbat B) Elektrlanmaydi C) to'g'ri javob yo'q D) Manfiy 6 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Barametr B) Elektroskop C) spedometr D) Areometr 7 / 25 Atom so’zining ma’nosi nima ? A) Zaryad B) Elektr zaryat C) Bo’linmas D) Musbat zaryad 8 / 25 Bitta elektron massasi nechaga teng ? A) 1,6*10^-19kg B) 8,81*10^-19kg C) 9,1*10^-31kg D) 3,36*10^-32kg 9 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) U=A/q B) R=U/I C) Q=ItU D) I=q/t 10 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) J B) U C) L D) R 11 / 25 Rezistor uchlaridagi kuchlanish 9 V ga teng . Unda 0,5 A tok utishi uchun uning qarshiligi qancha bo’lishi kerak ? A) 20 Ω B) 44 Ω C) 18 Ω D) 44.4 Ω 12 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 3 v B) 12 V C) 15 V D) 25 V 13 / 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) 9 A B) 4 A C) 0,8 A D) 2 A 14 / 25 Rezistor so’zining manosi nima ? A) Tok kuchi B) Kuchlanish C) Zaryad D) Qarshilik 15 / 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) 12 C D) 24 C 16 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 2,2 Ω B) 220 Ω C) 4,4 Ω D) 440 Ω 17 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) ν=m/µ B) to'g'ri javob yo'q C) N=mn∆z D) m=µ/N 18 / 25 Elektrolizdan foydalanib ,buyumlarning sirtini qiyin oksidlanadigan metallar bilan qoplash….deyiladi ? A) Galvonastegiya B) Galvonaplastina C) eletrlolez D) Ion bog’lanish 19 / 25 Natriy (Na) atomida nechta electron bor ? A) 12 ta B) 9 ta C) 11 ta D) 10 ta 20 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Jems Uatt C) Volta D) Amper 21 / 25 Faradey doimiysining son qiymatini toping ? A) 8000C/mol B) 96500 C/mol C) 7800 C/mol D) 7200 C/mol 22 / 25 Abu Rayhon Beruniy o’z asarlarida magnitni qanday nom bilan atagan ? A) Tabiy magnitlar B) Doimiy magnitlar C) Ohangrabo-temirni tortuvchi D) Suniy magnitlar 23 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Tok kuchi B) Elektr toki C) qisqa tutashuv D) Zaryadlar 24 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 54 J B) 60 J C) 50 J D) 780 J 25 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 3600 J C) 5000 J D) 5600 J 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
