Physics, 23.07.2021 08:20 hiiiiiiiiiiiii7032

Điện áp nguồn cung cấp 14v , điện áp sụt cho phép trên đường dây 0.4v . dây dẫn làm bằng đồng , chiều dài dây dẫn điện 5m. số sợi dây trong lõi là 9 . chọn tải điện là các bóng đèn được mắc song song với nhau , số lượng thông số bất kì . a/ tiết diện của 1 sợi dây trong lỗi dây dẫn

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Điện áp nguồn cung cấp 14v , điện áp sụt cho phép trên đường dây 0.4v . dây dẫn làm bằng đồng , chiề...

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