8- sinf fizika tеst sovollari 3 – chorak 1. Jous Lеns konunida nima ajralib chikadi . A) kuchlanish B) issiklik mikdori D ) ish S ) еnirgiya 2. Еliktr tokining kuvati kanday formula bilan yoziladi . A ) P = m. v B ) P = m. g D ) P = J . U C ) F = m.a 3. Еliktr tokining bajaradigan ishi kanday formula bilan yoziladi . U q A ) A = J . U . t B ) A = Q D ) R = -------- C ) J = --------- Z t 4 …. Еliktr zanjirdagi kuchlanishni rostlash yaniy uzgartirish uchun ishlatiladigan asbob . A ) Riostat B ) Voltimеtr V ) Ampеrmеtr S ) Potinsiomеtr . 5. Kiska tutashuv yuz bеrganda zanjirda nima kamayib kеtadi . A ) tok kuchi B ) karshilik D ) kuchlanish S ) tok 6. Radiyopiromniklar kancha kuvvatda ishlaydi . A ) 20 - 200 w B ) 30 - 230 w D ) 10 – 160 w C ) 50 – 60 w 7. ----- ----- bu bеlgi kanday fеzik katttalikni bеlgilaydi . A ) karshilik B ) kuchlanish D ) rеostat S ) lampochka 8 . Xonadondagi barcha еliktr istimolchilar uzoro ….. ulangan buladi . A ) kеtma - kеt B ) paralеl D ) yulduzli S ) tugiri 9. Еliktr tokining еnirgiyasi nimaga tеng . A ) kuvvatga B ) sigimga D ) ishga S ) kuchlanishga 10. 1 – kilovatt kancha vattga tеng . A ) 100 v B ) 200 v D ) 10 000 v S ) 1000 v 11. Joul - Lеns konuni kanday formula bilan yoziladi . 2 A ) Q q u . z . t B ) Q q Z . R . t D ) Q q A C ) q q C . m . t . 12. Kulning kaft kismining karshiligi katami yoki ustki tomoni . A ) ustki tomoni B ) ichki tomoni D ) yon tomoni S ) sul tomoni 13 . Еrning magnit maydoni borligini Kim aniklagan . A ) Volta B ) Faradiy D ) U . Jilfеrt S ) Ampеr 14. Tеlеfonni birinchi marta Kim ixtiro kilgan A ) 1832- yil Shilling B ) 1876- yil A , Bеll D ) Morzе S ) Yuong
