Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1224 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 5 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 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) 0,4 A D) 0,5 A 2 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 15 J B) 155 J C) 220 J D) 20 J 3 / 25 Elektr janjiridagi lampochkadan ma’lum vaqt davomida 25 c zaryad o’tib , 75 J ish bajarildi,lampochka qanday elektr kuchlanish ostida yongan? A) 25 V B) 15 V C) 3 v D) 12 V 4 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 1,5 V B) 5V C) 500 kV D) 220 V 5 / 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 6 / 25 Rezistor so’zining manosi nima ? A) Qarshilik B) Zaryad C) Tok kuchi D) Kuchlanish 7 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 12 C B) 10 C C) 15 C D) 24 C 8 / 25 Elektr zanjirida 2 m va ko’ndalang kesimining yuzi 0,5 mm2 bo’lgan nixrom simning qarshiligini toping ? A) 220 Ω B) 4,4 Ω C) 2,2 Ω D) 440 Ω 9 / 25 Akkumulator so’zining ma’nosi nima ? A) Tok manbayi B) To’plovchi C) Zaryad oqimi D) Zaryadlovchi 10 / 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) 44 V B) 220 V C) 180 V D) 110 V 11 / 25 Qahrabo so’zining ma’nosi nima ? A) Elektrlanuvchi B) Manfiy C) Somon tortuvchi D) Qattiq rezina 12 / 25 Shoyi matoga ishqalangan shisha tayoqcha qanday ishorada elektrlanib qoladi? A) Manfiy B) Elektrlanmaydi C) to'g'ri javob yo'q D) Musbat 13 / 25 Bitta elektron zaryadi nechaga teng ? A) 1,6*10^-19C B) 2,01*10^-19C C) 8,81*10^-19 D) 9,1*10^-31C 14 / 25 Atom tuzilishi modulini kim kashf etgan ? A) Beruniy B) Kulon C) Rezerfort D) Demokret 15 / 25 Elektr zaryadlarini to’plash uchun mo’ljallangan asbob qanday nomlanadi? A) Ampermetr B) Areometr C) Voltmetr D) kondensator 16 / 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*10‾⁵ N/C C) 5,1*10⁶ N/C D) 5*10⁵ N/C 17 / 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) 270 N B) 5*10‾⁸ N C) 2*10‾⁸ N D) 5,4*10‾⁴ N 18 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) 4 marta kamaydi B) 2 marta ortadi C) o`zgarmaydi D) 2 marta kamayadi 19 / 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 20 / 25 Atom so’zining ma’nosi nima ? A) Bo’linmas B) Zaryad C) Musbat zaryad D) Elektr zaryat 21 / 25 Atom yadrosida ikkita proton va ikkita neytron bor. Undagi elektronlar soni nechta? A) 6 ta B) 0 ta C) 2 ta D) 4 ta 22 / 25 Yorug’lik tezligini birinchi bo’lib kim aniqlagan A) J.Uatt B) O.Ryomer C) Rezirfort D) Nyuton 23 / 25 Elektrolidan tok o’tayotganda elektrodlarda modda ajralib chiqish hodisasi……deb ataladi A) Ion bog’lanish B) Suvli eritma C) Turli eritma D) Eletroliz 24 / 25 Natriy (Na) atomida nechta electron bor ? A) 10 ta B) 11 ta C) 12 ta D) 9 ta 25 / 25 manbaning turli qutb (faza) laridan kelayotgan ichki elektr simi ochiq joyining bir-biriga tegib ketishi…….deyiladi? A) Elektr toki B) Zaryadlar C) qisqa tutashuv D) Tok kuchi 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
