fizika 11-sinf olimpiada
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fizika 11-sinf olimpiada materiallari har bir topshiriq uchun 0.9 balldan baholanadi i variant 1. protondan 5∙10-11 m masofadagi elektr maydonning kuchlanganligini hisoblang. a) ~5,8∙10-11 b/m b) ~4,9∙10-11 b/m c) ~3,7∙10-11 b/m d) ~5,7∙10-11 b/m 2. agar tezlashtiruvchi kuchlanish 15 kv gat eng bo’lsa, kineskop trubkasidagi electron qanday kinetik energiyaga ega bo’ladi? a) 3,4∙10-16 j b) 2,4∙10-16 j c) 4,2∙10-16 j d) 0,5∙10-16 j 3. kondensator plastinalari orasidagi kuchlanish 220 v bo’lganda plastinalardagi turli turli ismli zaryadlar 10-4 kl ga teng. kondensatorning elektr sig’imi nimaga teng? a) 0,1 mkf b) 0,3 mkf c) 0,4 mkf d) 0,5 mkf 4. elektr sig’imi 10 mkf va 10 v kuchlanishgacha zaryadlangan kondensatorning elektr maydonining energiyasini hisoblang. a) 5∙10-4 j b) 3∙10-4 j c) 4∙10...
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