r 2 q q t 3. Elektr so`zi qanday so`zdan olingan ? A) Praton B) Eliktroskop C) Eliktron D) Neytron 4. Yashin qaytargich kim tomonidan kashf qilingan? A) XVIII-asr Frenkl B) XVIII- asr Faradey C) XVIII-asr Volta D) XVIII-asr Amper 5. Kondensator nechata o`tkazkichdan iborat bo`ladi ? A) 4 ta B) 3ta C) 2 ta D) 1 ta 6. Atom nimalardan tuzilgan ? A) neytron , praton B) yadro va elektron C) Ion va elektron D) Ion va Praton 7. Parallel ulash qanday formula bilan yoziladi ? A) C=C1 +C2 1 1 1 A B) ---- = ---- + ---- C) Uq ---- D) UqJ . R C C1 C2 q 8. Elektr sig`imining birligi nima ? A) Kulon B) Volt C) Farad D) Amper 9. Elektr toki hosil bo`lishi uchun nechta shart bulishi kerak ? A) 2 ta B) 3 ta C) 4 ta D) 5 ta 10. Voltimetirning belgisi qanday buladi ? A) B) V C) A D) --|___|-- 11. Reostat nima vazifani bajaradi ? A) qarshilikni o`lchaydigan asbob B) Kuchlanishni o`lchaydigan asbob C) Tok kuchini rostlaydigan D)Tokni o`lchaydi 12.Elektr toki quvvati qanday formula bilan yoziladi ? q U A) J q ---- B) A qJ . U . t C) PqU . J D) J q ----- t R 13. Kuchlanishning birligi nima ? A) Amper B) Volt C) Joul D) Kulon 14. Tok kuchi qanday formula bilan yoziladi ? F q A A) P q ---- B) P qU . S C) J q ----- D) U q ------ S t q 15. Metall o`zgargichlarda elektr tokini nimalar hosil qiladi ? A) Erkin elektronlar B) Ionlar C) Platonlar D) Neytronlar 16. Elektr tokining yo`nalishi qanday bo`ladi A) manfiy B) musbat C) nol buladi D) erkin harakati 17. Tok kuchi qanday asbob bilan o`lchanadi ?
