Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1577 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 1 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Tok kuchining o'lchov birligi nima? A) Kulon B) Amper C) Volt D) Joul 2 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) I=q/t B) R=U/I C) Q=ItU D) U=A/q 3 / 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) 0,1 A C) 0,5 A D) 0,4 A 4 / 25 Elekt kuchlanishi formulasi berilgan javobni ko’rsating. A) E=U/d B) I=q/t C) F=kq/r^2 D) U=A|q 5 / 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) 0,8 A B) 9 A C) 2 A D) 4 A 6 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) elektroskop B) voltmeter C) ampermetr D) elektrometr 7 / 25 Rezistor so’zining manosi nima ? A) Tok kuchi B) Kuchlanish C) Zaryad D) Qarshilik 8 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,1 A B) 0,5 A C) 0,2 A D) 0.4 A 9 / 25 Zaryadi -5*10-8 C bo’lgan nuqtaviy zaryadning 3 sm msofada hosil qilgan elektr maydon kuchlanganligini toping? A) 6*10⁴ N/C B) 5,1*10⁶ N/C C) 5*10⁵ N/C D) 5*10‾⁵ N/C 10 / 25 Bir-biridan 10sm masofada turgan sharchalardanbirining zaryadi -2*10-8 C, ikkinchisiniki esa 3*10-8C ga teng. Ular qanday kuch bilan tortishadi? A) 2*10‾⁸ N B) 270 N C) 5,4*10‾⁴ N D) 5*10‾⁸ N 11 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Areometr B) Voltmetr C) Ampermetr D) kondensator 12 / 25 Elektr zaryadining o’lchov birligi nima ? A) Joul B) volt C) Amper D) kulon 13 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Fales Miletskiy B) grek olimi Arximed C) yunon olimi Aristotel D) hamma javoblar to'g'ri 14 / 25 Elektr doimiysining son qiymati nechaga teng? A) 3*10^-19 C B) 8,85*10^-12C^2/N*m^2 C) -3*10^-19 C D) 9,1*10^-31kg 15 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) to'g'ri javob yo'q B) Manfiy C) Musbat D) Elektrlanmaydi 16 / 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 17 / 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) 4 marta kamaydi D) o`zgarmaydi 18 / 25 220 V kuchlanishda 5 A tok olib ishlaydigan dazmolning quvvatini toping ? A) 110W B) 220 W C) 100 W D) 1,1 kW 19 / 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) 54 J D) 60 J 20 / 25 Bitta atom massasini topish formulasini ko’rsating ? A) m=µ/N B) N=mn∆z C) ν=m/µ D) to'g'ri javob yo'q 21 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 9mA B) 35,5 mA C) 25 mA D) 7 mA 22 / 25 1Vatt.soat necha Jaulga teng ? A) 360 J B) 3600 J C) 5000 J D) 5600 J 23 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Zaryadlar B) Tok kuchi C) Elektr toki D) qisqa tutashuv 24 / 25 Gaz orqali elektr toki o’tish jarayoni …..deyiladi ? A) Uchqun B) Ion bog’lanish C) Gaz razryadi D) Elektroliz 25 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Ion bog’lanish B) Turli eritma C) Eletroliz D) Suvli eritma 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
