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Physics, 22.06.2021 06:10 logan5713

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...

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