Uy » Choraklik online testlar » Fizika choraklik » 8-sinf Fizika 3-chorak Fizika choraklik 8-sinf Fizika 3-chorak InfoMaster May 5, 2021 1269 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 5 8 Tomonidan yaratilgan InfoMaster 8-sinf Fizika 3-chorak Testni Shirinboyev Temurbek tayyorladi. 1 / 25 Ikkita o`tkazgichlar avval ketma- ket, so`ngra parallel ulandi. Bunda uning umumiy qarsiligi qanday o`zgaradi? A) o`zgarmaydi B) 2 marta ortadi C) 2 marta kamayadi D) 4 marta kamaydi 2 / 25 O’lchami va shakli hisobga olinmaydigan zaryadlangan jism qanday nomlanadi ? A) Manfiy zaryad B) Elementar zaryad C) Nuqtaviy zaryad D) Musbat zaryad 3 / 25 Akkumulator so’zining ma’nosi nima ? A) Zaryadlovchi B) Zaryad oqimi C) Tok manbayi D) To’plovchi 4 / 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) 220 V C) 110 V D) 44 V 5 / 25 Ishqalangan jismlarning tortishish hodisasini birinchi bo’lib kim aytgan? A) yunon olimi Aristotel B) yunon olimi Fales Miletskiy C) hamma javoblar to'g'ri D) grek olimi Arximed 6 / 25 Elektr zaryadining o’lchov birligi nima ? A) volt B) kulon C) Amper D) Joul 7 / 25 bu shartli belgi qanday nomlanadi? A) Tok manbayi B) O’tkazgichlarning tutashtirmasdan kesishishi C) Qo’ng’iroq D) Kalit 8 / 25 Zaryadli zarralarning tartibli harakati,ya’ni oqiminima deb nomlanadi? A) Zaryad B) Elektr toki C) Musbat zaryad D) Tok kuchi 9 / 25 Jismlarning elektrlanganligini sezish ,kuzatish uchun qo’llaniladigan asbob qanday nomlanadi ? A) Barametr B) spedometr C) Areometr D) Elektroskop 10 / 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) 20 Ω C) 44.4 Ω D) 18 Ω 11 / 25 Elektr zanjirda tokni rostlash uchun qo’llaniladigan turli qarshilikli elektr asbobi qanday nomlanadi ? A) potensiyometr B) elektrometr C) elektroskop D) rezistor 12 / 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) 0,4 A C) 0,5 A D) 0,1 A 13 / 25 Xonadonlardagi elect tarmog’ining kuchlanishi nechaga teng? A) 5V B) 220 V C) 1,5 V D) 500 kV 14 / 25 Elektr qarshiligi qaysi harf bilan belgilanadi? A) L B) J C) U D) R 15 / 25 Uyali telefon iste'mol qiladigan tok kuchi qanchaga teng ? A) 0,1 A B) 0,5 A C) 0.4 A D) 0,2 A 16 / 25 Elektr zanjiridagi lampochkada parallel ulangan voltmeter 1,5 V ni ko’rsatmoqda. Lampochkadan 10 c zaryad o’tganda qancha ish bajariladi A) 20 J B) 155 J C) 220 J D) 15 J 17 / 25 Kuchlanishni o’lchaydigan asbob nima diyeladi? A) elektroskop B) ampermetr C) voltmeter D) elektrometr 18 / 25 Tok kuchi formulasi keltirilgan javobni aniqlang? A) Q=ItU B) U=A/q C) I=q/t D) R=U/I 19 / 25 Elektr zanjirlaridagi Lampochkadan 0,2 A tok o’moqda lampochka speraliorqali 1 minutda nechakulon zaryad o’tadi ? A) 24 C B) 10 C C) 15 C D) 12 C 20 / 25 Natriy (Na) atomida nechta electron bor ? A) 11 ta B) 12 ta C) 9 ta D) 10 ta 21 / 25 220 V kuchlanishda 0,25 A tok olib yonayotgan elektr lampochkadagi tokning quvvatini toping ? A) 550 W B) 55 W C) 500 W D) 5,5 W 22 / 25 Elektr tokining quvvati formulasini ko’rsating ? A) P=IU B) N=A/t C) I=q/t D) R=I/U 23 / 25 1,5 soat davom etgan elektrolizda katodda 15 mg nikel yig’iladi.Elektroliz vaqtida eletrolitdan o’tagan tok kuchini toping ? A) 9mA B) 7 mA C) 35,5 mA D) 25 mA 24 / 25 Bug’ mashinasini kim kashf etgan ? A) Kulon B) Jems Uatt C) Amper D) Volta 25 / 25 Cho’ntak fanari lampochkasidagi kuchlanish 4,5 V, tok kuchi 0,2 A bo’lsa ,1minutdaqancha elektr energiya sarflanadi? A) 54 J B) 780 J C) 50 J D) 60 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
