Fizika Test sovolari №2 Chorak

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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 .
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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