1-nazorat ishi nazorat shakli: Fizik diktant
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- 4-NAZORAT ISHI Nazorat shakli: Test
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2 2 va 6 qarshilikka ega bo’lgan o’tkazgichlar o’zaro parallel ulangan zanjirning tarmoqlanmagan qismidagi tok kuchi 12 A ga teng bo’lsa, o’tkazgichlar uchlaridagi kuchlanish qanday (V) bo’ladi? ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ 3 Ikkita o’tkazgich ketma-ket ulanganda 10 Ω, parallel ulanganda esa 1.6 Ω qarshilik hosil bo’ldi. Shu o’tkazgichlarning qarshiligini aniqlang (Ω). ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ Murodjon43 4-NAZORAT ISHI Nazorat shakli: Test 1 Berilgan formulalardan qaysi biri Joul-Lens qonunini ifodalaydi? a)Q=I 2 Rt b)Q=λm c)Q=A+∆U d)Q=Lm 2 Zanjirning biror qismidagi kuchlanish 3 V bo’lganda 6 A tok 10 s da zanjirning shu qismida necha joul ish bajaradi? a)1.8 b)5 c)20 d)180 3 Elektr tarmog’ida qarshiliklari 100 Ω va 200 Ω bo’lgan ikkita elektr lampa o’zaro parallel ulangan. Lampaning qaysi biri ko’proq quvvati sarflaydi. a)ikkinchisi 2 marta b)ikkinchisi 4 marta c)birinchisi 2 marta d)birinchisi 4 marta 4 Eritilgan qalay bilan elektr asboblardagi uzilgan kontakrlarni qanday asbob yordamida ulanadi. a)Elektr payvandlash b)Elektr kavsharlagich c)Elektr isitgich d)Dazmol 5 Zanjirning biror qismidagi kuchlanish necha volt bo’lganida 3 A tok 4 s zanjirning shu qismida 24 J ish bajaradi? a)2 b)0.5 c)32 d)18 6 Metallarni bir-biriga payvandlashda qanday asbobdan foydalaniladi. a)Elektr payvandlash b)Elektr kavsharlagich c)Elektr isitgich d)Termometr 7 Elektr toki zanjirning biror qismida 3 s da 6 J ish bajaradi. Agar zanjir qismidagi uchlanish 2 V bo’lsa, undan o’tayotgan tokning kuchi qanday? a)1 b)4 c)9 d)36 8 Quvvati 500 W bo’lgan elektrplitada 50 s ichida necha (kJ) energiya ajraladi. a)20 b)23 c)25 d)27 9 Birinchi cho’g’lanma lampochka kim tomondan kashf etilgan. a)Tomas Edison b)Isaak Nyuton c)Aleksandr Lodigin d)Jeyms Joul 10 Qarshiligi 2 Ω bo’lgan simdan 15 A tok o’tadi. 2 minut ichida unda qancha energiya ajraladi(kJ)? a)27 b)54 c)450 900 11 5MW·soat ni W·s ga o’tkazing. a)1.8·10 7 b)1.8·10 8 c)1.8∙10 9 d)1.8·10 10 12 Elektr tokini quvvatini qaysi ingliz olim kashf etgan. a) Aleksandr Lodigin b) Tomas Edison c) Jeyms Joul d)Jeyms Uatt 13 9 Gekto joul necha joulga teng. a)90 b)900 c)9000 d)90000 14 Berilgan formulalardan qaysi biri tokning bajargan ishini ifodalaydi? a)A=U 2 R·t b)A=I 2 R c)A=I·U·t d)A=P·t 15 Qarshiligi 12 Ω bo’lgan o’tkazgich 120 V kuchlanishli tarmoqqa ulandi. O’tkazgichda 10 min ichida qancha (kJ) issiqlik ajraladi? |
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