Nazoratishlari va laboratoriyala r

5-NAZORAT ISHI
1.Elektr zanjiridagi lampochkadan 10 minutda 90 C zaryad oqib o’tayotgan bo’lsa,zanjirdagi tok kuchi nimaga teng?
2.Ichki qarshiligi 3 Om bo’lgan tok manbaiga 7,5 Om tashqi qarshilik ulanganda manba qisqichlaridagi kuchlanish 15 V gacha pasaydi.Manba EYUK ini toping.
3.ko’ndalang kesim yuzasi 4 mm2 bo’lgan o’tkazgichdagi tok kuchi 5 mikroamperga teng bo’lsa,tok zichligini aniqlang.
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