Physics, 20.06.2021 03:10 Meiyuh1

có 3 dây dẫn thẳng song song ,vuông góc với mặt phẳng hình vẻ, có dòng diện I1 I2 I3 chạy qua như hinh ve , Dòng I1 I2 được giữ chặt , Dong I3 có xu hướng

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có 3 dây dẫn thẳng song song ,vuông góc với mặt phẳng hình vẻ, có dòng diện I1 I2 I3 chạy qua như hi...

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