Mathematics, 17.06.2021 21:00, Marley3082
Dòng điện kín có dạng tam giác vuông cân tại đỉnh A, cạnh BC có độ dài 20 cm , cường độ I 20A như hình vẽ, đặt trong không khí. Xác định vectơ B tại điểm M là trung điểm của BC.
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Dòng điện kín có dạng tam giác vuông cân tại đỉnh A, cạnh BC có độ dài 20 cm , cường độ I 20A như...
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